Certainly, these genes are involved in life extension in simple species such as threadworms and yeast.

当然，这些基因也出现在简单物种的生命延长上，比如蛲虫和酵母。

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Experts have confirmed that the fossilised plants are liverworts, a simple species which has no roots or stems.

在这里输入译文专家已经证实这些植物化石是一种没有根和茎的原始苔类。

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In a few very simple species, that appears to be the case, and molecular biologists are exploring ways to parlay that knowledge into something that could benefit humans.

这种现象出现在一些单纯种中。分子生物学家正在探索一种方法，能够把知识集中到某些能够有益于人类的事物上。

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Certainly, these genes are involved in life extension in simple species such as threadworms and yeast.

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Our brains are much better at processing the simple risks we've had to deal with throughout most of our species' existence, and much poorer at evaluating the complex risks modern society forces us to face.

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"Building this was not as simple as it should be, because there has not been any formal way to register species, " Costello says.

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