“灾变”造句

周期性的局部地区的灾变降低了种群的数量.
Periodic local catastrophes reduce populations.

最著名的灾变论的对立理论就是渐变论.
The most popular alternative to catastrophism is the gradualistic approach.

即便当我还是个孩子的时候, 我会做核灾变的噩梦.
Even as a kid, I had nightmares of nuclear apocalypse.

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