VOA标准英语2010年-Gushing Oil Threatens Wildlife, Gulf E

The Gulf¹ of Mexico oil disaster comes during spring spawning² season, an especially bad time for aquatic³ life making them extraordinarily⁴ vulnerable to the toxic⁵ effects of the oil itself, says Doug Rader, chief oceans scientist for the Environmental Defense⁶ Fund.

"Now the same thing is happening with birdlife migrating to and from the tropics. Those that have completed their migrations⁷ in the Gulf region are nesting and are beginning to feed this year's crop of migratory⁸ birds."

As the oil gushes⁹ from the broken well head at the sea floor, Rader says it has the potential to contaminate each layer of the water column that, "directly exposes those animals to toxicity¹⁰, at the surface including the very sensitive surface zones where not only sea turtles and marine¹¹ mammals and sea birds can be oiled, but also where the highways for fish larvae¹² exist. And then as it rains back into the abyss over a much wider area carrying toxicants back into the deep sea where ancient corals and other sensitive ecosystems¹³ exist."

Limited choices

One response strategy has been to use dispersants or anti-freeze-like chemicals to break the oil up into smaller globules.

Those particles mix more readily with water, and sink. Rader says dispersants are being sprayed from airplanes and - for the first time - pumped directly into the deep ocean unsure of its effects.

U.S. Navy photo by Mass Communication Specialist First Class Michael B. Watkins
Aerial images of the Deepwater Horizon oil spill taken from a US Coast Guard HC-144 aircraft.

It is a choice, he says, between two bad options. While the chemicals may protect birds and other wildlife by dissipating the slick before it reaches shore, their toxicity in the Gulf could harm fish and other marine life.

Judith Dowell, a biologist with Woods Hole Oceanographic Institution and an expert on oil spill contamination, says it is important to understand the nature of the oil in order to predict its ecological¹⁵ effects.

"If a lot of it is very light material, it is going to vaporize. If a lot of it is heavy material, it may precipitate¹⁶ to the bottom. In the meantime, you have these medium molecular¹⁷ weight compounds that are dispersing¹⁸ within the water column. Until you can get some very accurate measurements of the depth of the slick and the geographical¹⁹ extent of the slick, it's not easy to do."

Widening threat

The slick threatens sensitive coastal²⁰ wetlands, areas critical to wildlife.

Barrier islands and wetlands also serve to buffer²¹ towns on the coast from hurricanes and storm surges. Doug Rader with the Environmental Defense Fund says the spill may finally force coastal communities to put more adequate plans and safeguards in place to prevent an off shore disaster in the future.

Deepwater Horizon Response Center
Workers clean up oil along a beach at South Pass, La. May 11, 2010 near where the Mississippi River meets the Gulf of Mexico.

"There are thousands of wells in the Gulf. There are 35,000 miles [56,000 kilometers] of pipeline²² in the Gulf," says Rader. "It is pretty clear that the status quo in terms of investment to prevent risk and to respond to events wasn't adequate and that some retrofitting of that entire infrastructure²³ is necessary to be able to sustain the current level of production in the Gulf."

Rethinking offshore²⁴ drilling?

Rader says the time is also ripe to rethink the wisdom of offshore drilling in favor of other energy options in the face of climate change.

"That going forward with a more balanced portfolio²⁵ of energy sources that begins to address the global problem of warming caused by greenhouse gas emissions²⁶ and threatening coastal areas like coastal Louisiana by rising seas and intensifying²⁷ storms has to be a piece of the mix."

Graphic¹⁴ depicting²⁸ the Riser Insertion Tube method to contain oil leaking from the riser of the Deepwater Horizon Well.

To this end, on May 12, Senators John Kerry and Joe Lieberman introduced long-awaited climate and energy legislation.

The bill covers a broad cross-section of the nation's top environmental and energy issues, from expanded nuclear power and carbon capture and sequestration, to giving states veto power over drilling within 120 kilometers off shore if, in the language of the proposed law, "they stand to suffer significant adverse²⁹ impacts in the event of an accident."
 

1 gulf   

n.海湾；深渊，鸿沟；分歧，隔阂

参考例句：

• The gulf between the two leaders cannot be bridged.两位领导人之间的鸿沟难以跨越。
• There is a gulf between the two cities.这两座城市间有个海湾。

2 spawning   

产卵

参考例句：

• Encounter sites have a small chance of spawning a "Commander" NPC. 遭遇战地区有很小的几率遇到NPC指挥官。
• Instantly revives your Champion at your Spawning Pool, 9 minute cooldown. 立即在出生地复活你的英雄，冷却时间9分钟。

3 aquatic   

adj.水生的，水栖的

参考例句：

• Aquatic sports include swimming and rowing.水上运动包括游泳和划船。
• We visited an aquatic city in Italy.我们在意大利访问过一个水上城市。

4 extraordinarily   

adv.格外地；极端地

参考例句：

• She is an extraordinarily beautiful girl.她是个美丽非凡的姑娘。
• The sea was extraordinarily calm that morning.那天清晨，大海出奇地宁静。

5 toxic   

adj.有毒的，因中毒引起的

参考例句：

• The factory had accidentally released a quantity of toxic waste into the sea.这家工厂意外泄漏大量有毒废物到海中。
• There is a risk that toxic chemicals might be blasted into the atmosphere.爆炸后有毒化学物质可能会进入大气层。

6 defense   

n.防御，保卫；[pl.]防务工事；辩护，答辩

参考例句：

• The accused has the right to defense.被告人有权获得辩护。
• The war has impacted the area with military and defense workers.战争使那个地区挤满了军队和防御工程人员。

7 migrations   

n.迁移，移居( migration的名词复数 )

参考例句：

• It foundered during the turmoils accompanying the Great Migrations. 它在随着民族大迁徙而出现的混乱中崩溃。 来自辞典例句
• Birds also have built-in timepieces which send them off on fall and spring migrations. 鸟类也有天生的时间感应器指导它们秋春迁移。 来自互联网

8 migratory   

n.候鸟，迁移

参考例句：

• Many migratory birds visit this lake annually.许多候鸟每年到这个湖上作短期逗留。
• This does not negate the idea of migratory aptitude.这并没有否定迁移能力这一概念。

9 gushes   

n.涌出，迸发( gush的名词复数 )v.喷，涌( gush的第三人称单数 )；滔滔不绝地说话

参考例句：

• The stream gushes forth from the rock. 一股小溪从岩石中涌出来。 来自辞典例句
• Fuel gushes into the combustion chamber. 燃料喷进燃烧室。 来自辞典例句

10 toxicity   

n.毒性，毒力

参考例句：

• The hoarse grunt or squeal is characteristic of toxicity.嘶哑的哼声和叫声是中毒的特征。
• Dieldrin is related to aldrin,and its toxicity to earthworms is similar.狄氏剂与艾氏剂有关，对蚯蚓的毒性是相似的。

11 marine   

adj.海的；海生的；航海的；海事的；n.水兵

参考例句：

• Marine creatures are those which live in the sea. 海洋生物是生存在海里的生物。
• When the war broke out,he volunteered for the Marine Corps.战争爆发时，他自愿参加了海军陆战队。

12 larvae   

n.幼虫

参考例句：

• Larvae are parasitic on sheep.幼虫寄生在绵羊的身上。
• The larvae prey upon small aphids.这种幼虫以小蚜虫为食。

13 ecosystems   

n.生态系统( ecosystem的名词复数 )

参考例句：

• There are highly sensitive and delicately balanced ecosystems in the forest. 森林里有高度敏感、灵敏平衡的各种生态系统。 来自《简明英汉词典》
• Madagascar's ecosystems range from rainforest to semi-desert. 马达加斯加生态系统类型多样，从雨林到半荒漠等不一而足。 来自辞典例句

14 graphic   

adj.生动的，形象的，绘画的，文字的，图表的

参考例句：

• The book gave a graphic description of the war.这本书生动地描述了战争的情况。
• Distinguish important text items in lists with graphic icons.用图标来区分重要的文本项。

15 ecological   

adj.生态的，生态学的

参考例句：

• The region has been declared an ecological disaster zone.这个地区已经宣布为生态灾难区。
• Each animal has its ecological niche.每种动物都有自己的生态位.

16 precipitate   

adj.突如其来的；vt.使突然发生；n.沉淀物

参考例句：

• I don't think we should make precipitate decisions.我认为我们不应该贸然作出决定。
• The king was too precipitate in declaring war.国王在宣战一事上过于轻率。

17 molecular   

adj.分子的；克分子的

参考例句：

• The research will provide direct insight into molecular mechanisms.这项研究将使人能够直接地了解分子的机理。
• For the pressure to become zero, molecular bombardment must cease.当压强趋近于零时，分子的碰撞就停止了。

18 dispersing   

adj. 分散的 动词disperse的现在分词形式

参考例句：

• Whereas gasoline fumes linger close to the ground before dispersing. 而汽油烟气却靠近地面迟迟不散。
• Earthworms may be instrumental in dispersing fungi or bacteria. 蚯蚓可能是散布真菌及细菌的工具。

19 geographical   

adj.地理的；地区(性)的

参考例句：

• The current survey will have a wider geographical spread.当前的调查将在更广泛的地域范围內进行。
• These birds have a wide geographical distribution.这些鸟的地理分布很广。

20 coastal   

adj.海岸的，沿海的，沿岸的

参考例句：

• The ocean waves are slowly eating away the coastal rocks.大海的波浪慢慢地侵蚀着岸边的岩石。
• This country will fortify the coastal areas.该国将加强沿海地区的防御。

21 buffer   

n.起缓冲作用的人(或物)，缓冲器；vt.缓冲

参考例句：

• A little money can be a useful buffer in time of need.在急需时，很少一点钱就能解燃眉之急。
• Romantic love will buffer you against life's hardships.浪漫的爱会减轻生活的艰辛。

22 pipeline   

n.管道，管线

参考例句：

• The pipeline supplies Jordan with 15 per cent of its crude oil.该管道供给约旦15%的原油。
• A single pipeline serves all the houses with water.一条单管路给所有的房子供水。

23 infrastructure   

n.下部构造，下部组织，基础结构，基础设施

参考例句：

• We should step up the development of infrastructure for research.加强科学基础设施建设。
• We should strengthen cultural infrastructure and boost various types of popular culture.加强文化基础设施建设，发展各类群众文化。

24 offshore   

adj.海面的，吹向海面的；adv.向海面

参考例句：

• A big program of oil exploration has begun offshore.一个大规模的石油勘探计划正在近海展开。
• A gentle current carried them slowly offshore.和缓的潮流慢慢地把他们带离了海岸。

25 portfolio   

n.公事包；文件夹；大臣及部长职位

参考例句：

• He remembered her because she was carrying a large portfolio.他因为她带着一个大公文包而记住了她。
• He resigned his portfolio.他辞去了大臣职务。

26 emissions   

排放物( emission的名词复数 )； 散发物（尤指气体）

参考例句：

• Most scientists accept that climate change is linked to carbon emissions. 大多数科学家都相信气候变化与排放的含碳气体有关。
• Dangerous emissions radiate from plutonium. 危险的辐射物从钚放散出来。

27 intensifying   

v.（使）增强， （使）加剧( intensify的现在分词 )；增辉

参考例句：

• The allies are intensifying their air campaign. 联军部队正加大他们的空战强度。 来自辞典例句
• The rest of the European powers were in a state of intensifying congestion. 其余的欧洲强国则处于越来越拥挤的状态。 来自英汉非文学 - 历史

28 depicting   

描绘，描画( depict的现在分词 )； 描述

参考例句：

• a painting depicting the Virgin and Child 一幅描绘童贞马利亚和圣子耶稣的画
• The movie depicting the battles and bloodshed is bound to strike home. 这部描写战斗和流血牺牲的影片一定会取得预期效果。

29 adverse   

adj.不利的；有害的；敌对的，不友好的

参考例句：

• He is adverse to going abroad.他反对出国。
• The improper use of medicine could lead to severe adverse reactions.用药不当会产生严重的不良反应。