对于一个达尔文主义者来说，生命事关两件事：生存和繁殖。
For a Darwinian, life is about two things: survival and reproduction.
社会达尔文主义者认为我们可以把人类社会比作动物世界。
Social Darwinists asserted that we can compare human society to the animal world.
社会达尔文主义者认为我们可以把人类社会比作动物世界。
Social Darwinists asserted that we can compare human society to the animal world.
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