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海洋相关论文题目大全初中英语作文

发布时间:2024-07-08 12:07:25

海洋相关论文题目大全初中英语作文

As we all know the sea food we eat is from the In the past,the oceans was very clean and beautifull,there were a lot of sea animals in But nowadays the oceans is dirty,many sea animals are we must keep them We must stop polluting The oceans is very important to us! As we all know the sea food we eat is from the In the past,the oceans was very clean and beautifull,there were a lot of sea animals in But nowadays the oceans is dirty,many sea animals are we must keep them We must stop polluting The oceans is very important to us! As we all know the sea food we eat is from the In the past,the oceans was very clean and beautifull,there were a lot of sea animals in But nowadays the oceans is dirty,many sea animals are we must keep them We must stop polluting The oceans is very important to us! As we all know the sea food we eat is from the In the past,the oceans was very clean and beautifull,there were a lot of sea animals in But nowadays the oceans is dirty,many sea animals are we must keep them We must stop polluting The oceans is very important to us! As we all know the sea food we eat is from the In the past,the oceans was very clean and beautifull,there were a lot of sea animals in But nowadays the oceans is dirty,many sea animals are we must keep them We must stop polluting The oceans is very important to us! As we all know the sea food we eat is from the In the past,the oceans was very clean and beautifull,there were a lot of sea animals in But nowadays the oceans is dirty,many sea animals are we must keep them We must stop polluting The oceans is very important to us!

my name is Fang Haotian, I am a lively boy, I live in China's Shandong Liaocheng,I am seventeen years old this I am in Grade nine Class five, I love my class very much, In the class,I have many friends,We talked and laughed,It make me I have many hobbies,such as runing , drawing,writting,reading and playing f In these, my favorite drawing, because It always make me forget something I like making friends,If you want to make friends with me,please join me!Friends! I look forward to your Happy Year of the Tiger!

The simplest water pollution definition would be any contamination of water bodies with some pollutant(s) that changes physical, biological, and chemical conditions of any body of water making this water harmful for environment and surrounding Water pollution occurs once too much pollutants (mostly in form of different waste) are discharged directly or indirectly into water Water pollution does not only cause great environmental damage but is also the leading worldwide cause of deaths and diseases responsible for the deaths of more than 14,000 people each day, mostly in developing Many people are not aware that water pollution is serious problem in almost all parts of the world, and not just in third world countries like some choose to In fact many experts will tell you that reality is completely different than the common belief, and that actually water pollution problem is already out of Water pollution problem is in most cases connected with the careless handling of chemical agents, toxins introduced into our water through industrial dumping, and farm All these factors make our water unsafe to For instance, the chlorine that is widely used to disinfect our water is believed by many to be carcinogenic, and therefore a major health issue that significantly contributed to worldwide rise of cancer Basically chlorine is present in every glass of water we draw from our tap, and although some studies have confirmed that chlorine can indeed be one of the cancer risk factors we simply cannot do without it because by removing chlorine from our water we would open the door to many waterborne diseases that would kill millions of people around the So how to protect yourself from water pollution? The best option available to us is to install a multi-layered home water filtering system in your The best option is multi media block system that has an activated granular carbon filter, a sub micron filter, and an ion This system is capable to prevent up to 99% of all of the harmful contaminants present in our water from entering your High quality home water filtering system is really your best ally against water 网上找的这篇,符合你的基本要求了,希望能帮到你。

Now, he also does not pay attention to protect the The world’s water plays a very important role in all aspects of our lives, providing food, employment and other Over two-thirds of the world’s population lives within 400 km of the sea, and just over half of the world’s population lives in a coastal strip 120 miles As many as half a billion people draw their livelihoods from the sea in one way or another—processors, packers, shippers, ship builders and Ocean ecosystems provide goods and services valued at at least several trillion dollars per year, and millions of people earn their living directly from the Let us up, protect our ocean of survival!

海洋相关论文题目大全初中英语

As we all know the sea food we eat is from the In the past,the oceans was very clean and beautifull,there were a lot of sea animals in But nowadays the oceans is dirty,many sea animals are we must keep them We must stop polluting The oceans is very important to us!

关于高效课堂的或者学生自主学习的都可以。或是专题,关于预习,导入新课的模式,作业的设置等,范围越小越好,越具体越好。

海洋生物来源药物先导化合物的研究进展  作者:吴文惠 编辑:studa20  【摘要】 海洋生物中活性物质丰富,本篇文章对国内外近3年来从海洋生物中分离提取到的萜类化合物以及糖苷类化合物进行了归纳,并对其研究趋势进行了展望。这些新发现的萜类化合物广泛分布于海藻、珊瑚、海绵以及一些海洋真菌等海洋生物中,主要以单萜、倍半萜、二萜、三萜结构型式存在;而糖苷类化合物在海藻、海绵、海参、海星等海洋生物中发现大部分以糖苷脂、甾体糖苷、萜类糖苷型式存在。  【关键词】 海洋生物 萜类化合物 糖苷类 生物活性  【Abstract】 Marine organism show some important biological This paper reviews terpenoids and glycosides from marine organism at home and abroad since 2005, and provides scientific evidence for reasonable exploitation and Terpenoids are mainly occurred on marine algae, coral, sponge and some fungi by monoterpene, sesquiterpene, diterpene and And glycosides with structures of lipid, steroid and terpenoid are distributed to marine algae, sponge, sea cucumber and   【Key words】 Marine organism; terpenoid; glycoside; bioactivity  海洋是生命之源,由于海洋环境的特殊性,具有高压、低营养、低温(特别是深海)、无光照以及局部高温、高盐等生命极限环境,海洋生物适应了海洋独特的生活环境,必然造就了海洋生物具有独特的代谢途径和遗传背景,必定也会有新的、在许多陆地生物中未曾发现过的新结构类型和特殊生物活性的化合物。  萜类物质是一类天然的烃类物质,其分子中具有异戊二烯(C5H8)的基本单位。故凡由异戊二烯衍生的化合物,其分子式符合(C5H8)n通式的均称萜类化合物(terpenoids)或异戊二烯类化合物(isopenoids)。但有些情况下,在分子合成过程中由于正碳离子引起的甲基迁移或碳架重排以及烷基化、降解等原因,分子的某一片断会不完全遵照异戊二烯规律产生出一些变形碳架,它们仍属于萜类化合物。海洋生物中萜类化合物主要以单萜、倍半萜、二萜、二倍半萜为主,三萜和四萜种类和数量都较少,且大部分以糖苷形式存在。萜类化合物是海洋生物活性物质的重要组成部分,广泛分布于海藻、珊瑚、海绵、软体动物等海洋生物中,具有细胞毒性、抗肿瘤活性、杀菌止痛等活性作用。  糖苷的分类有多种方法,按照在生物体内是原生的还是次生的可将其分为原生糖苷和次生糖苷(从原生糖苷中脱掉一个以上的苷称为次生苷或次级苷);按照糖苷中含有的单糖基的个数可将糖苷分为单糖苷、双糖苷、三糖苷等;按照糖苷的某些特殊化学性质或生理活性可将糖苷分为皂苷、强心苷等;按照苷元化学结构类型可分为黄酮糖苷、蒽醌糖苷、生物碱糖苷、三萜糖苷等,海洋类的糖苷大部分是按照此特点分类的,主要包括鞘脂类糖苷、甾体糖苷、萜类糖苷和大环内酯糖苷等,在很多海洋生物如海藻、珊瑚、海参、海绵等中均发现有糖苷类化合物存在。已有的研究表明海洋糖苷类成分大都具有抗肿瘤、抗病毒、抗炎、抗菌、增强免疫力等生物活性。抗白血病和艾氏癌药物阿糖胞苷Ara-C(D-arabinosyl cytosine) 1、抗病毒药物的Ara - A 2以及Ara-C的N4-C16-19饱和脂肪酰基化衍生物3是海洋糖苷类药物成功开发的典范〔1〕。  本篇文章对国内外自2005年来从海洋生物中分离提取到的萜类化合物以及糖苷类化合物进行了总结。  1 萜类化合物  1 单萜 2005年M G Knott等人〔2〕对从红藻Plocamium corallorhiza中分离得到的三种多卤代单萜化合物plocoralides A-C(1~3)〔3,4〕进行了活性研究,发现化合物Plocaralides B(2), C(3)对食管癌细胞WHCOI具有中等强度的细胞毒作用,这些化合物具有卤素取代基。  2 倍半萜 从海泥来源的真菌Emericella variecolor GF10的发酵液中分离得到两个新型的倍半萜化合物6-epi-ophiobolin G(4)和6-epi-ophiobolin N(5),化合物在1~3μM浓度时能使神经癌细胞Neuro 2A凋亡,同时伴随细胞萎缩和染色体聚集〔5〕。这一类ophiobolins是天然的三环或四环的倍半萜化合物,对线虫、真菌、细菌以及肿瘤细胞有着普遍的抑制活性。  Willam Fenical等人从海洋沉积物分离得到一株放线菌CNH-099,在该菌的代谢产物中分离到具有细胞毒作用的新颖的 marinonc 衍生物 neomarinone(6)、isomarinone(7)、hydroxydebromomarinone(8)和methoxydeuromomarinonc(9),它们均是倍半萜萘醌类抗生素。Neomarinone(6)和marinones(7~9)对HCrll6结肠癌细胞显示中等程度的体外细胞毒作用(IC50=8μg/ml),而且,neomarinone(6)对NCI-s60癌细胞也具有中等程度细胞毒作用(IC50=10μg/ml)〔6〕。  化合物花侧柏烯倍半萜(10~12)从希腊北爱情海希俄斯岛采集的红藻 L microcladia中分离得到〔7〕。红藻 L microcladia 经有机溶剂CH2Cl2/MeOH (3:1)提取,以Cyclohexane/EtOAc(9:1)为洗脱液进行硅胶柱层析,最后经HPLC纯化得到化合物(10-12)。该试验并对化合物活性进行了研究,发现三种化合物均对肺癌细胞NSCLC-N6 和 A-549有抑制作用,化合物(10):IC50=9 μM (NSCLC-N6)和8 μM (A-549),化合物(11):IC50 = 4μM (NSCLC-N6) 和4 μM (A-549) ,化合物(12):IC50= 7 μM (NSCLC-N6)和0 μM (A-549)。后两个化合物对肺癌细胞毒活性作用明显高于第一个化合物,推测可能由于后两个化合物结构中酚羟基以及五环内双键的存在提高了化合物活性,而化合物中溴原子的存在并没有对其活性构成影响。从中国南京采集的红藻L okamurai也分离出四种衍生的花侧柏烯倍半萜化合物,分别是Laureperoxide (13), 10-bromoisoaplysin (14), isodebromolaurinterol (15)和10-hydroxyisolaurene (16)〔8〕。5种snyderane倍半萜(17~21)化合物从红藻L luzonensis中分离得到〔9〕。  从一个软海绵种属Halichondria sp中分离得到四种具有抗微生物活性的含氮桉烷倍半萜化合物halichonadins A-D(22~25)〔10〕。该海绵采集于日本冲绳运天港,5 kg样品溶于4L MeOH,所得的115g MeOH提取物分别用1200ml EtOAc和400MlH2O萃取,9g EtOAc萃取物经硅胶柱层析后,洗脱液为MeOH/CHCl3(95:5)和石油醚/乙醚(9:1),得到化合物halichonadins A-D(22~25)和已知化合物acanthenes B、C。活性检测实验显示:化合物halichonadins A-D均具有抗细菌活性,同时halichonadins B和C也具有抗真菌活性,化合物halichonadins C对新型隐球菌(Cryptococcus neoformans)的半致死浓度(IC50)达到0625μg/ml。三个部分环化的倍半萜(26~28)化合物具有抑制磷酸酶Cdc25B活性,从海绵Thorectandra 中分离得到〔11〕。冷冻的海绵样品经4℃去离子水浸泡冷冻干燥后得到的干涸物, 随后用MeOH/CH2Cl2(1:1)和MeOH/H2O(9:1)的有机溶剂提取获得粗提物。采用活性追踪的方式,对粗提物(IC50=8μg/ml)进一步分离,将其溶于100mlMeOH/H2O(9:1)有机溶剂中,得到2g的粗提物加入300ml正己烷,获得水相部分溶于MeOH/H2O(7:3)的溶剂中,再用300ml CH2Cl2提取得到的部分经活性测定显示对磷酸酯酶抑制活性最强(IC50=6μg/ml),之后采用反相C-18柱HPLC分离,得到部分环化的倍半萜化合物(26)16-oxo-luffariellolide(12mg, tR=18min),化合物(27) 16-hydroxy-luffariellolide (5 mg, tR=19min)以及化合物(28) luffariellolide (20mg, tR=38min)。五种属于倍半萜类的化合物hyrtiosins A-E (29~33),从中国海南两个不同地方的海绵Hyrtios erecta种属中分离得到〔12〕。  氧化的倍半萜化合物gibberodione(34), peroxygibberol(35) 和 sinugibberodiol(36)从台湾软珊瑚Sinularia gibberosa分离得到〔13〕,化合物(35)具有较温和的细胞毒性〔14〕。从珊瑚Eunicea 中提取的七种倍半萜代谢产物(37~43)〔15〕,含有榄烷,桉烷和吉玛烷骨架结构,研究显示对Eunicea 种属的疟原虫具有轻度的抑制作用。  3 二萜 以前很少有从绿藻中分离得到萜类化合物的报道,但是与2004年相比,提取的代谢产物数量有所增加〔16〕。从澳大利亚塔斯马尼亚采集的绿藻Caulerpa brownii中分离出许多新型二萜类化合物,其中化合物(44~48)在没有分支的绿藻中提取得到〔17〕,而类酯萜化合物(49)是从分支的绿藻中获得,该研究同时显示提取的类酯萜化合物对细胞、鱼类、微生物均有不同程度的毒性作用〔18〕。  日本Koyama K等人从褐藻Ishige okamurae来源的未知海洋真菌(MPUC 046)中分离到一种新型的二萜类化合物phomactin H(50)〔19〕。真菌(MPUC 046)经含150g小麦的400ml海水25℃发酵培养31天后,采用CHCl3溶剂提取、硅胶层析及HPLC纯化得到phomactin H。该化合物同已发现的phomactin A-G化合物一样,均属于血小板活化因子(PAF)拮抗剂,能抑制PAF诱导的血小板凝聚,同时推测此活性与化合物的某个特定骨架结构有关。  从法国南部大西洋海滨采集的褐藻Bifurcaria bifurcata中分离得到(51~55)五种新型的极性非环状二萜类化合物〔20〕。该褐藻经CHCl3/MeOH(1:1)提取,硅胶层析(洗脱液为不同比例的Hexane,EtOAc,MeOH),经反相C-18柱HPLC纯化获得十二种化合物,其中五种为新型二萜类化合物。化合物(51~53)在Hexane: EtOAc(2:3)洗脱液中发现,而化合物(54)和(55)则从Hexane: EtOAc(1:4)洗脱液中获得。  6种新型的Dactylomelane二萜类化合物 (56~61)从西班牙特纳里夫南部家那利群岛采集的红藻Laurencia中分离得到〔21〕,其结构具有C-6到C-11环化的单环碳新型结构。采集的红藻经CH2Cl2/MeOH(1:1)有机溶剂提取后,用洗脱液Hexane/CHCl3/MeOH(2:1:1)进行Sephadex LH-20反相色谱分离,结合TLC点样筛选的部分用洗脱液EtOAc/hexane(1:4)进行硅胶柱层析,最后采用硅胶柱进行HPLC纯化得到六种新型的单环碳二萜类化合物Dactylomelans。从红藻L luzonensis中也分离得到二萜类化合物luzodiol (62)〔9〕。一个溴代二萜类化合物 (63)从日本其他红藻Laurencia物种中分离得到 〔22〕。  Xenicane二萜类化合物(64~71)从台湾珊瑚Xenia blumi分离出来,而化合物xeniolactones A-C (72~74)则是从台湾Xenia florida中分离出来的〔23〕。化合物 (64~67), (69), (70) 和 (72)具有轻微的细胞毒性作用。非Xenicane代谢产物xenibellal (75)对Xenia umbellata也具有轻微的细胞毒性作用〔24〕。化合物Confertdiate (76)是一个四环的二萜类物质,从中国珊瑚Sinularia conferta中分离得到〔25〕。  从史密森尼博物院癌症研究所收集的海葵中分离得到的二萜类化合物actiniarins A-C (77~79)能适度抑制人cdc25B磷酸酶重组〔26〕。 Periconicins A,B (80~81)〔27〕是从内生红树林真菌Periconia 分离得到的二萜类的新化合物,能抑制不同微生物的生长活性,诸如bacillus subtilis ATCC 6633, Staphylococcus aureus ATCC 6358p, Staphylococcus epidermis ATCC 12228等等。  南海真菌2492#是从采自香港红树林植物Phiagmites austrah样品中分离得到的,从2492#菌株的发酵液中分离得到的两种二萜类化合物 (82~83)有很好的生理活性〔28〕,如抗肿瘤、降压、调整心率失常,同时降压调整心率失常的作用在相同的条件下优于临床现用的阳性对照物。  从中国红树林植物Bruguiera gymnorrhiza分离出二萜类化合物 (84~86),化合物(86)对小鼠成纤维细胞具有适当的细胞毒活性〔29〕。也从中国红树林另一物种Bruguiera sexangula rhynchopetala分离出三种二萜类化合物 (87~89) 〔30〕。与之结构相似的二萜类化合物 (90~93)从中国Bruguiera gymnorrhiza中分离得到,其中化合物 (92)和 (93)有轻微的细胞毒活性〔31〕。  4 二倍半萜 Willam Fenical研究小组从曲霉属Aspergillus海洋真菌(菌株编号CNM-713)分离到一个新的二倍半萜化合物aspergilloxide (94),该化合物为含有25个碳原子的新骨架,对人的结肠癌细胞HCT-116有微弱的细胞毒活性〔32〕。在此之前,Willam Fenical等人从巴哈马的红树林中的漂浮木中也分离到一株真菌Fusarium heterosporum CNC-477, 并从中分离得到一系列多羟基二倍半萜类化合物neomangicols A-C(95~97)〔33〕和mangicols A-G (98~104)〔6〕,它们的结构如下图所示。Neomangicols的骨架为25个碳的二倍半萜,是首次从天然物中分离得到。药理实验显示化合物 (96)具有和庆大霉素大致相当的对革兰阳性细菌的抑制能力,化合物 (98)和 (99)对MPA(phorbol myristate acetate)诱导的鼠类耳朵水肿有抗炎症活性。5 三萜 从海洋生物中提取得到的三萜类化合物主要以三萜皂苷、三萜烯类、三萜糖苷等形式存在。四环三萜皂苷类化合物nobilisidenol (105) 和 (106)是从中国黑乳海参Holothuria nobilis分离得到的〔34〕。采集于福建东山的黑乳海参洗净切碎后用85%的EtOH冷浸提取,得到的流浸膏均匀分散于水中,依次用石油醚、二氯甲烷、n-BuOH萃取,研究发现n-BuOH提取物经大孔吸附树脂、正相硅胶层析、反相C-18硅胶柱层析以及反相C-18 柱HPLC分离得到三萜皂苷类化合物nobilisidenol (105)和(106)。易杨华等同时从海参中提取到了其它的三萜糖苷类化合物以及三萜皂苷脱硫衍生物〔35,36〕。三萜烯类化合物intercedensides D-I(107-112)从中国海参Mensamaria intercedens中分离得到,具有细胞毒功能〔37〕。新西兰海参Australostichopus mollis是单硫酸酯三萜糖甙化合物mollisosides A(113), B1(114) 和 B2(115)的来源〔38〕。  具有细胞溶解作用的三萜类化合物sodwanone S (116)是从印度洋多毛岛采集的海绵Axinella weltneri中分离得到的〔39〕。三萜苷类化合物sarasinosides J-M (117-120)分离自印尼苏拉威西岛采集的海绵Melophlus sarassinorum,对B subtilis和S cerevisae的细菌具有抗微生物活性作用〔40〕。  转贴于 中国论文下载中心

去ABC 天下英语看看,里边资源很充足

海洋相关论文题目大全初中生英语作文

my name is Fang Haotian, I am a lively boy, I live in China's Shandong Liaocheng,I am seventeen years old this I am in Grade nine Class five, I love my class very much, In the class,I have many friends,We talked and laughed,It make me I have many hobbies,such as runing , drawing,writting,reading and playing f In these, my favorite drawing, because It always make me forget something I like making friends,If you want to make friends with me,please join me!Friends! I look forward to your Happy Year of the Tiger!

As we all know the sea food we eat is from the In the past,the oceans was very clean and beautifull,there were a lot of sea animals in But nowadays the oceans is dirty,many sea animals are we must keep them We must stop polluting The oceans is very important to us! As we all know the sea food we eat is from the In the past,the oceans was very clean and beautifull,there were a lot of sea animals in But nowadays the oceans is dirty,many sea animals are we must keep them We must stop polluting The oceans is very important to us! As we all know the sea food we eat is from the In the past,the oceans was very clean and beautifull,there were a lot of sea animals in But nowadays the oceans is dirty,many sea animals are we must keep them We must stop polluting The oceans is very important to us! As we all know the sea food we eat is from the In the past,the oceans was very clean and beautifull,there were a lot of sea animals in But nowadays the oceans is dirty,many sea animals are we must keep them We must stop polluting The oceans is very important to us! As we all know the sea food we eat is from the In the past,the oceans was very clean and beautifull,there were a lot of sea animals in But nowadays the oceans is dirty,many sea animals are we must keep them We must stop polluting The oceans is very important to us! As we all know the sea food we eat is from the In the past,the oceans was very clean and beautifull,there were a lot of sea animals in But nowadays the oceans is dirty,many sea animals are we must keep them We must stop polluting The oceans is very important to us!

记得以前有一次,我跟妈妈、马榆凡、卫红阿姨、悦悦、悦悦妈妈,一起去海洋公园玩卫红阿姨先进去帮我们买好了票,然后就招呼我们进去到了里边,哇噻!这里面大约有一百多个人了,全都是来看海洋生物的好不容易找到了几个位子,我们三个小朋友就连忙跑过去坐下,生怕别人抢走了似的,这三个大人则不紧不慢地走到位子前面方肯坐下“快看,开始了”是卫红阿姨在叫我们看了我看到先是小鱼出来,它们有时各游各的;有时两条鱼面对面游着,好像在说悄悄话;还有时在追赶别的小鱼呢!接着出场的是美人鱼我走到参观台前面,把背靠着参观台,我扭头过去看,美人鱼和那些小鱼依然兴致勃勃地玩着突然我感到一股冷气朝我扑来,我同时吸了一口凉气,再扭头朝参观台那边,我吓得掉在地上滚到了座位前面,你们猜,我看到了什么?原来在我没有掉到地上滚到座位前面时,一只鲨鱼正虎视眈眈地望着我,虽然隔着玻璃,但我还是吓得够呛后来鲨鱼更加地胆大妄为了,它向美人鱼和小鱼跑去可是没想到,美人鱼和小鱼对鲨鱼的这种行为反感极了,它们看见鲨鱼朝它们这边过来,就立刻逃跑但是鲨鱼只想抓住美人鱼,美人鱼前面的小鱼一律不管,所以小鱼看到鲨鱼没有追它们,就不跑了美人鱼被鲨鱼追得不知道怎么办这时,我真想跳到里面杀死鲨鱼,救出美人鱼好在,有人自告奋勇地跳到水里救出了美人鱼原来是一出游戏节目,不过这游戏也看得真过瘾!

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海洋相关论文题目大全初中生英语

海洋科学前沿这本期刊上肯定有你想看的文献

不明白你的意思:你要写英语论文,不知道研究方向? 还是你要找个船舶英文资料翻译,因为写论文前要求翻译外语资料?还是什么??

曲金良老师的论文要求独立完成~~

海洋文化和岛屿文化和大陆文化的区别海洋文化和大国崛起的关系海洋文化的利益支撑和诉求我国海洋文化的演变

海洋相关论文题目大全初中英语范文

As we all know the sea food we eat is from the In the past,the oceans was very clean and beautifull,there were a lot of sea animals in But nowadays the oceans is dirty,many sea animals are we must keep them We must stop polluting The oceans is very important to us! As we all know the sea food we eat is from the In the past,the oceans was very clean and beautifull,there were a lot of sea animals in But nowadays the oceans is dirty,many sea animals are we must keep them We must stop polluting The oceans is very important to us! As we all know the sea food we eat is from the In the past,the oceans was very clean and beautifull,there were a lot of sea animals in But nowadays the oceans is dirty,many sea animals are we must keep them We must stop polluting The oceans is very important to us! As we all know the sea food we eat is from the In the past,the oceans was very clean and beautifull,there were a lot of sea animals in But nowadays the oceans is dirty,many sea animals are we must keep them We must stop polluting The oceans is very important to us! As we all know the sea food we eat is from the In the past,the oceans was very clean and beautifull,there were a lot of sea animals in But nowadays the oceans is dirty,many sea animals are we must keep them We must stop polluting The oceans is very important to us! As we all know the sea food we eat is from the In the past,the oceans was very clean and beautifull,there were a lot of sea animals in But nowadays the oceans is dirty,many sea animals are we must keep them We must stop polluting The oceans is very important to us!

1 Write a letter to the mayor(市长) to show you want to be a volunteer foe the 2010 World Expo2 Changes aroud me3 I will succeed4 How to keep health5 An unforgettable experience6 Giving a present to sb7 Sports and recreation8 When others are in trouble9 How to protect environment10 My view of a Good student11 i am thnkful for sb12 My ambition(理想)13 My school life14 Everyone needs help15 My favourite things16 My father17 My teacher18 My birthday party19 Our school sports meeting20 How to study English21 How to protect the Environment03年上海中考To be a lovely Shanghaiese(上海人)04上海中考Leaving school(毕业时分)05上海中考Grow pains and gains06上海中考I have a dream07上海中考Things I hate to do08上海中考Love around me

As we all know the sea food we eat is from the In the past,the oceans was very clean and beautifull,there were a lot of sea animals in But nowadays the oceans is dirty,many sea animals are we must keep them We must stop polluting The oceans is very important to us!

写个关于翻译技巧的吧比如一些谚语 成语 歇后语的一些特殊翻译或者诗歌 剧本的特殊翻译体现出语言的美感 语言的美丽 这样写就不会很古板了 毕竟谚语,成语,诗歌 什么的比较优美或者说是没那么古板

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