达尔文还产生了一种极具颠覆性的观念，以至于他将其保密了二十年。

Darwin was also in the grip of an idea so subversive that he would keep it under wraps for another two decades.

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达尔文还产生了一种极具颠覆性的观念，以至于他将其保密了二十年。

Darwin was also in the grip of an idea so subversive that he would keep it under wraps for another two decades.

youdao