Impacts by meteorites represent one mechanism that could cause global catastrophes and seriously influence the evolution of life all over the planet.

陨石的撞击代表了一种可能导致全球性灾难并严重影响地球上所有生命进化的机制。

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Evolution is a mechanism, and it works within rules.

进化是一种机制，它按照规则来运作。

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Constant evolution is the survival mechanism of the microbial world.

持续不断的进化是微生物世界的生存机制。

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This is interesting in as much as it shows how such thinking has changed over the years, but her real purpose seems to be to create doubt in the reader's mind about whether selection at the level of the gene is the only mechanism of evolution, which is what Mr Dawkins and his fellow selfish-geners believe.

ECONOMIST: Richard Dawkins under fire

But the whole market mechanism and its evolution is something that, I'm kind of of the Buffett School.

NPR: Felix Rohatyn's View Of The Financial Crisis

Evolution is a mechanism, and it works within rules.

ECONOMIST: Evolution