Scientists have described the Aral sea as the site of the worst ecological disaster on earth.
科学家们把咸海描绘成地球上生态环境最差的地方。
The particles interfere with the formation of carbon-14 on earth.
这些粒子干扰了地球上碳-14的形成。
We are talking about the effect of all the clouds on earth averaged together.
我们讨论的是地球上所有云层的平均效果。
They live in precarious balance and one of the toughest environments on earth.
他们生活在不稳定的平衡中，并且这是地球上最艰苦的环境之一。
There are probably no people on Earth who like to gossip as much as the British.
世界上可能没有人比英国人更喜欢八卦了。
Most important of all, the Amazon irrigates the largest tropical rainforest on earth.
最重要的是，亚马逊河灌溉着地球上最大的热带雨林。
Most important of all, the Amazon irrigates the largest tropical rain forest on earth.
最重要的是，亚马逊河灌溉着地球上最大的热带雨林。
He also explains why he chose to devote his life to one of the smallest creatures on earth.
他还解释了为什么他选择把他的一身致力于地球上最小的生物之一。
So while on Earth we have several types of volcanoes, on Venus there's mostly the one type.
所以地球上的火山有好几种类型，而在金星上的火山只有一种。
Jarosite is a yellowish-brown mineral with a crystalline structure that's also found on earth.
黄钾铁矾是一种黄褐色的矿物，它的晶体结构也存在于地球上。
The perpetual argument is that funds are tight, that we have more pressing problems here on Earth.
永恒的争论是资金紧张，我们在地球上有更紧迫的问题。
The UFOs, it is believed, must contain scientists from other planets who are studying life on earth.
人们相信，这些不明飞行物中一定有来自其他星球的科学家，他们正在研究地球上的生命。
Since most violent events on Earth occur randomly, nobody can predict when or where they will happen.
由于地球上大多数的暴力事件都是随机发生的，没有人能预测它们将在何时何地发生。
Coral reefs are one of the most fragile, biologically complex, and diverse marine ecosystems on Earth.
珊瑚礁是地球上最脆弱、生态性最复杂、最多样化的海洋生态系统之一。
Other planets in our solar system lack the oxygen atmosphere that helps explain why life exists on Earth.
我们太阳系的其他行星缺乏氧气大气层，这有助于解释为什么地球上存在生命。
Scientists have linked the mass extinction at the end of the Cretaceous with a meteorite impact on Earth.
科学家将白垩纪末期的大灭绝与地球上的陨石撞击联系起来。
Caffeine, the stimulant in coffee, has been called "the most widely used psychoactive substance on Earth".
咖啡中的咖啡因因被称为“地球上使用最广泛的精神活性物质”。
One step in its formation on Earth involves microorganisms; they actually speed up the formation of jarosite dramatically.
在地球上形成黄钾铁矾的其中一个步骤涉及到微生物；实际上，微生物能大幅加快黄钾铁矾的形成。
There was no reason on earth why she couldn't have moved in with us.
她不能跟我们一起搬进来根本没有道理。
On earth, the air is always moving.
在地球上，空气总是在流动。
How on earth could he have disappeared?
他怎么会消失呢？
Elephants are the largest land animals on earth.
大象是地球上最大的陆地动物。
The loss of trees influences everybody on earth.
树木的减少影响着地球上的每一个人。
We lived on earth over a thousand years ago.
一千多年前，我们生活在地球上。
Health will do good to people here on Earth.
健康将为地球上的人们带来好处。
Think about so many kinds of lives living on Earth.
想想生活在地球上的这么多种生命。
Everyone on Zadernol is smarter than the smartest person on Earth.
扎德诺尔的人比地球上最聪明的人都聪明。
I'm starting to see why you're so unhappy here on Earth.
我开始明白为什么你在地球上这么不开心了。
Others imagine it as the last really clean place left on earth.
其他人把它猜想为地球上最后一块净土。
The artist was finally humbled by the greatest artist on earth, Mother Nature.
这位艺术家最终被世界上最伟大的艺术家——大自然母亲所折服。
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