Horizon - Life On Mars 火星生命 - 3

Conditions on Mars were so harsh that it was hard to imagine any life surviving there. The idea of sophisticated aliens was wiped out. We know that conditions on Mars today are not very good for life.

新东方背诵文选 L40 Cohesion-tension Theory

Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more than 100 meters above the ground. U

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BARBARA KLEIN: This is SCIENCE IN THE NEWS, in VOA Special English. Im Barbara Klein. BOB DOUGHTY: And Im Bob Doughty. Today we remember Hurricane Katrina and tell about the science of severe ocean storms. (MUSIC) BARBARA KLEIN: Many Americans are ob

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The air thins and they begin to lose the protective weight of the miles of air above them. The pressure is dropping, when you finally get to the stratosphere, and to the altitude we like to work at, it's only one one hundredth that of it's on the gro

英语听书《海底两万里》第547期 第34章 大屠杀(8)

I tried to intervene one last time. 我想做最后一次调解。 But I had barely queried Captain Nemo when the latter silenced me: 但我刚一喊尼摩船长，他就让我住嘴。 I'm the law, I'm the tribunal! 我就是公理！我就是正义！

英语听书《海底两万里》第439期 第26章 大头鲸和长须鲸(20)

Equipped with picks, some ten men climbed onto the Nautilus's sides and cracked loose the ice around the ship's lower plating, which was soon set free. 十来个船员走到诺第留斯号两旁，他们拿着尖镐，凿开船身周围的冰，船身不

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Captain Nemo had picked an odd time to philosophize. 尼摩船长选择这时候来作这种哲学思考，真是太离奇了。 All in all, this reply told me nothing. 总之，他的答复对我没有什么帮助。 May I learn, sir, I asked him, w

英文短文：Cohesion-tension Theory

Cohesion-tension Theory Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more than 100 meters above the ground. Until the end of the ninete

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Kelly Moore and her friends went to the beach. Kelly did not know how to swim. All her friends were having fun in the water. Come in! they kept shouting. Stop being a chicken! she heard them say. Kelly hated being teased. She finally decided to jump

英国学生科学读本 第35期:蒸汽往上冒(2)

There would soon be an explosion; the kettle would be burst open. It is in this way that boiler explosions are often caused. When there is too much steam in a boiler, and it cannot get out, it presses against the sides of the boiler, until at last th

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【英文原文】 If I were to stop drinking water right now, how long could I live? There are several different factors involved here. A human being isnt an automobile which needs a certain amount of gas. There are conditions under which a person c

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Cohesion-tension Theory Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more than 100 meters above the ground. Until the end of the ninete

流行美语 第 98 课

Li Hua 正在往图书馆走，突然，Larry 把她叫住了。Li Hua 在今天的谈话中会学到 两个常用语：what's her face 和thingamajig。 LL: Hey, Li Hua. One of your classmates asked

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In 1993, water aerobics was only for senior citizens or patients in rehab. Nowadays, it encompasses a variety of trendy underwater sports, all of which are healthy. The body has 90 percent support when under water. That means the joints only have to

英语听书《海底两万里》第180期 第13章 一些数字(3)

Fine, captain, but now we come to a genuine difficulty. You're able to lie flush with the surface of the ocean, that I understand. 对，船长，可是这里有实际的困难。这样，您可以使船面跟洋面一致，我可以理解。 But low

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These algae are a genuine prodigy of creation, one of the wonders of world flora. 这些海藻类实在是造化的奇迹，宇宙植物界的一个奇迹。 This family produces both the biggest and smallest vegetables in the world. 地球上最小和

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These are the normal navigational instruments, I replied, and I'm familiar with their uses. 这些是航海家常用的仪器，我答，我知道它们的用法。我现在看见的这个表盘，上面有能转动的针，那不是流体压力计吗？

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When you look at a lake, you are looking at a collection of molecules that have been there on average for about a decade. 要是你望一眼湖水，你看到的是一大堆分子，它们在那里平均已达10年之久。 In the ocean the residence