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他们居住于洞中，靠打猎为生，能够使用并制造简单的石器。

They lived in caves and hunted and they could use and make simple stone-made tools.

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之后，宿主细胞读取逆转录病毒的基因就像它们自己的一样，并制造新的逆转录病毒。

The cell then reads the retrovirus's genes as if they were its own, and manufactures new retroviruses.

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Because we've learned about that biology we've been able to make erythropoietin outside the body and use it as a drug.

由于我们已经知道了这种生物学机制,因此我们能体外制造促红细胞生成素,并作为药品应用

耶鲁公开课 - 生物医学工程探索课程节选

So essentially, they regulate this action potential, and they do so by helping to establish and then control the voltage gradient within the cells.

总之本质上，它们负责调节动作电位,它们做到这一点通过协助制造,并控制细胞内的电位梯度。

麻省理工公开课 - 化学原理课程节选

I may want to finish the particular point that I'm making, I'll try to come back to you and I'll then raise your question.

也许我想结束这个我制造的特定点，我会试着回到这里并提出你的问题。

耶鲁公开课 - 死亡课程节选