The dwarf said, "Let the poor things enjoy themselves, you shall not kill them."

小矮人说：“让可怜的家伙们自由地活着吧，你不能杀他们。”

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Meanwhile, the deadliest strains of the virus perished with their hosts as natural selection favored strains that could infect hosts but not kill them.

同时，由于自然选择更倾向于选择那些能够感染宿主但不致其死亡的病毒，这种致命病毒便随着宿主的死亡而消失。

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So Joshua saved them from the Israelites, and they did not kill them.

于是约书亚这样待他们，救他们脱离以色列人的手，以色列人就没有杀他们。

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Furthermore, about two-thirds of men who get prostate cancer have a slow-growing "indolent" form of the disease that will not kill them.

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According to Dr McMahon, a big part of the problem is that both species can survive out of the water for several days, so transporting a boat overland from one river basin to another, a common practice in North America, will not necessarily kill them.

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"They were believed to be spreading because the winter was not cold enough to kill them, and that's destroying forests, " he said.

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