关于海洋的英文美文欣赏
海洋浩瀚无涯,拥有丰富的资源,为人类提供了无数的功能与利益。下面是学习啦小编带来的关于海洋的英文美文欣赏，欢迎阅读!
关于海洋的英文美文欣赏篇一
Overfishing Whales and the Environment
过度捕鲸与环境
Until recently, when scientists studied changes in open-ocean ecosystems, they looked atchanges in the bottom of the food chain that gradually make their way to the top, like foodshortages and shifts in the ocean environment. A recent study, however, suggests that moreattention needs to be given to top-down influences as well.
直到最近，当科学家们在研究远洋地区生态系统的变化时，他们观察了处于食物链最底层并且在慢慢上升的(生物)变化，比如说食物短缺、海洋环境的变化。然而，最近的一项调查显示，人们还应该更多的注意(食物链)自上而下的影响。
For example, over the past few decades, there's been a major collapse of the populations ofharbor seals, fur seals, sea lions, and sea otters living on the coasts of western Alaska. Now anew study suggests that all this destruction can be traced back to humans overfishing spermand baleen whales between 1946 and 1979.
比方说，在过去的几十年里，生活在阿拉斯加西海岸的斑海豹、海狗、海狮和海獭数量极具下降。现在，一项新的调查显示，所有的这些毁坏都可以归咎于人类在1946年到1979年期间过度捕捞抹香鲸和须鲸。
Killer whales, who live at the top of the ocean food chain, used to prey on sperm and baleenwhales. When these were no longer available, the killer whales were forced to fish farther downthe food chain. First they fed on seals, which were the easiest to catch and the mostnutritionally valuable.
虎鲸是在海洋食物链的最高层，它习惯于捕食抹香鲸和须鲸。当虎鲸不能再捕食它们的时候，它就被迫捕食处于更下一层的食物链(的生物)。她们先捕食的是最容易捕捉且最有营养价值的海豹。
Then, when seals became rare, the killer whales turned to sea lions. When the sea lionpopulation crashed, they started fishing sea otters. The domino effect reaches even farther.Without sea otters keeping sea urchins in check, their population has exploded. And they'vedestroyed the kelp forests, and with it, the kelp forest ecosystem in southwestern Alaska.
接着，当海豹变得稀少后，虎鲸便转向了海狮。而又当海狮的数量变少后，虎鲸又开始猎杀海獭了。多米诺效应又继续延伸。没了海獭约束海胆，海胆的数量变得庞大起来。并且破坏阿拉斯加啊西南部的海藻林生态系统。
Animals switching food sources can have a very serious effect on the environment. And thatwe humans, as the ultimate predators, need to give a lot of thought to the choices we make.They may affect the food web in unintended ways.
动物间交换食物来源对环境有着很严重的影响。而作为终极捕食者，人类需要好好思考一下他们所做的选择。(因为)这些选择可能会以人们所不知道的方式来影响食物网。
关于海洋的英文美文欣赏篇二
Motional Induction
电磁感应
Last time, we talked about "motional induction," a phenomenon by which the ocean generatesa magnetic field.
上次，我们提到过动生电磁感应：海洋产生磁场的一种现象。
It works like this: earth has its own magnetic field. The ocean has plenty of charged atoms init, in the form of dissolved salt. These atoms are in motion because the ocean flows.
地球有自己的磁场，海洋有无数溶解盐形式的带电原子，随着海洋运动而运动。
Charged atoms moving through a magnetic field will induce an electric current. And an electriccurrent will, in turn, create another magnetic field. The ocean should generate its ownmagnetic field.
在磁场中运动的带电原子会引起电流，而电流反过来又回形成另一个磁场。这样海洋应该就形成了自己的磁场。
You said should. How could we know this "motional induction" is happening?
你说“应该”，我们怎么知道这种动生电磁感应确有其事?
Direct evidence came in 2003 from scientists working at the University of Washington and aresearch institute in Potsdam, Germany. These researchers used a magnetometer on board anorbiting satellite.
直到2003年，华盛顿大学和德国波兹坦的某研究学院研究人员将磁力计放在轨道卫星上，证实海洋的磁场真是存在。
First, they figured out what the magnetic field of the planet should be. After subtracting thisfigure, they found there was still some leftover magnetic field.
最初，磁力计上的数据让科学家以为是地球磁场作用的。而后，他们发现除去这个因素后，仍然有磁场存在。
Next, the team made a computer model of what kind of magnetic field the ocean shouldgenerate through motional induction. Sure enough, their prediction matched the excessmagnetic field measured by the satellite.
研究人员又电脑模拟在动生电磁感应让海洋产生哪种磁场，当然，科学家的推论和卫星上测出的“另一个”磁场吻合。
The satellite also found that magneticintensity over the oceans peaked every twelve and a halfhours, but not over the land. Can you guess why?
卫星还发现，海洋磁场每隔12个半小时就会出现高峰，但是地球磁场不受影响。你能猜到原因吗?
Every twelve hours... Oh,I get it—tides!
每隔12个半小时?我知道了!答案是潮汐。
Exactly right! The tides rise and fall every twelve and half hours, just as that extra magneticenergy swells and diminishes. This is very strong evidence that motional induction is real... andthe ocean has its own magnetism.
完全正确!潮汐每隔12个半小时潮起潮落，正好和“另一个”磁场高低峰吻合。这正是磁场感应存在的真凭实据，海洋确实有自己独特的磁力。
关于海洋的英文美文欣赏篇三
A long time ago, and has a small drop of water in the east china sea listening to the story of the east china sea grandpa stresses. it is aware of the east china sea using miles apart, can not be described in a vast sea, with 1000 960 high enough to describe the depth of the sea. it is very envious of the east china sea. Therefore, it asked the East China Sea grandfather: "grandpa east.
Why then has the vast East China Sea so deep? "East grandfather told it:" I also another little drop of water, I and many partners around the clock to muddy pool together a small partnership, it becomes a small stream. But we do not stop pace, the United States is continuing to pour forward, and then became rivers. Finally many rivers come together; it becomes a sea, the formation of the East China Sea. "Small drop asked: "we really have so much power? Can be turned into a stream, into a river into the sea? "East grandpa replied: "of course not! Can not become small rivers flow, so you can become the sea. Also, into the sea, do not forget the existence of small water droplets, not to overlook the power of small water droplets, but it is the source of our life! Without it, we would not. "Small drop in the east china sea remember his grandfather, finally became the famous South China Sea.
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