British scientist Stephen Hawking is worried that any extraterrestrial life we find is likely to be a creature out of the movie Predator, not ET.

英国科学家斯蒂芬·霍金担心，我们发现的任何外星生命更可能是电影《铁血战士》而不是《ET外星人》里的生物。

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Change is a part of life, but rapid change, says scientist George Woodwell, is the enemy of life.

变化是生活的一部分，但科学家乔治·伍德维尔说，迅速的变化就是生活的敌人。

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But the arrival of a scientist changes his life.

而一位科学家的到来改变了他的生活。

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