21 篇文章
whiskered terns travel thousands of kilometers
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whiskered terns travel thousands of kilometers 须浮鸥会飞行数千公里

Thirty kilometers south,
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Thirty kilometers south, 向南30公里

600 meters deep and covering 10,000 square kilometers.
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600 meters deep and covering 10,000 square kilometers. 深达600米 面♥积♥达一万平方公里

compacted to form permanent ice sheets several kilometers thick.
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compacted to form permanent ice sheets several kilometers thick. 压缩成了几千米厚的永久性冰层

almost nine kilometers high,
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almost nine kilometers high, 高度接近9000米

Today, they are 2,500 kilometers long,
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Today, they are 2,500 kilometers long, 如今该山脉长2500公里

they pierce the surface at close to 90 kilometers an hour.
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they pierce the surface at close to 90 kilometers an hour. 以接近每小时90公里的速度刺入水面

Able to rapidly accelerate to 50 kilometers an hour...
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Able to rapidly accelerate to 50 kilometers an hour... 它能够很快加速到每小时50公里

Every living thing within a thousand kilometers
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Every living thing within a thousand kilometers 一千公里范围内的一切生物

is tumbling towards Earth at 100,000 kilometers per hour.
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is tumbling towards Earth at 100,000 kilometers per hour. 正以每小时10万公里的速度坠向地球