英语听力音频

　　出国留学网小编为大家带来英语听力音频：为什么贫瘠的地方生物多样性更丰富，以幽默诙谐的方式为你解答那些那些你意想不到的科学小知识，详细内容如下，和小编一起来看一下吧~

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　　A soccer-field sized patch of forest in frigid Alaska has about 40 different species of plants,compared with about 70 in temperate England and 300 in the Amazonian rain forest.These biodiversity differences hold true for entire countries,too:England has 1500 plant species,while tropical Guyana,9000.

　　在极其寒冷的阿拉斯加 一块足球场大小的森林大约含有40种物种，与之相比 较温和的英国约有70种 亚马逊雨林则有300种。这种生物多样性差异对国家同样适用;英国有1500种植物，而热带圭亚有9000种.

　　The super diversity of tropical rainforests is only equalled in one other type of ecosystem on Earth:scrubby fire-prone shrublands that grow in western Australia and southern Africa.These shrublands may not look as majestic as tropical rainforests,but in a given area,they're home to similarly stupendous numbers of species.

　　热带雨林的生物多样性 仅相当于地球上另一个生态系统 澳大利亚西部和非洲南部 易发火灾的低矮灌木地 这些灌丛或许看起来没有热带雨林那么壮观，但在相同面积下 它们所包含的物种数是一样的。

　　Which doesn't necessarily mean that the rainforests and shrublands are easy places for plants to live.In fact,both ecosystems owe their enormous diversity,in part.to the fact that their soils have critically low supplies of nitrogen and especially phosphorus,nutrients plants need in order to grow.

　　这并不意味着热带雨林和灌丛是适宜植物生长的地方。事实上 这两个系统都不该拥有这么多物种，它们的...

　　出国留学网英语听力栏目为您提供英语听力音频：我们为何要将望远镜送入太空?在潜移默化提升听力和口语的过程中以幽默诙谐的方式为你解答那些那些你意想不到的科学小知识，详细内容如下：

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　　If the purpose of a telescope is to bring far-away things closer to us,then why do we send some of them so far away ?The main reason to put a telescope into space is to avoid that perpetual trouble maker:the atmosphere since astronomenrs haven't yet figured out how to get rid of it.And it's a big nuisance.

　　如果说望远镜的任务是将远处物体呈现在我们面前,那么,我们为何将望远镜送去远方呢?将望远镜送入太空的主要目的是为了避开麻烦制造者:大气层,因数天文学家尚未找出摆脱大气影响的方法.这问题相当恼人.

　　First off,the atmosphere plane gets in the way,what with its clouds and smoke and haze than can block light from distant stars or nearby planets.And even just the air in a clear sky blocks a huge range of the wavelengths of lights,pretty much only letting through visible light,anda smattering of infra-red and radio waves.

　　首先大气平面挡在中间,其中的云、烟、霾会挡住远处星星和近处行星发出的光。即便晴空万里光是空气就会挡住很大范围的光波波段，几乎只允许可见光、以及少数红外光和无线电波通过。

　　The atmosphere is also -HEY! Stop that!...Distracting At day,visible light from the sun bounces off of air molecules,and other small particles and completely overwhelms the light from any other star you might want to look at.At night,the light from the moon and from human sources bounces off the same paricles and outshines the light from most distant and...