如果一个有机体的环境条件偶尔或经常变得严酷，它可能是有利于这个有机体在生命周期中形成一个抗性阶段的内建。

If conditions within an organism's environment occasionally or regularly become harsh, it may be advantageous for an organism to have a resistant stage built into the life cycle.

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在生命周期的早期识别出风险。

Identified risks early in the life-cycle.

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该领域没有停在生命周期中的这个位置。

This domain does not stop here in the lifecycle.

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Cells can stop in their lifetime at some point in the cell cycle and persist for long periods of time.

细胞生命期可以停止在细胞周期的某个点,并保持很长时间

耶鲁公开课 - 生物医学工程探索课程节选

So, one that perhaps does not reproduce in such high numbers that you create an overwhelming infection, but one that still goes through its lifecycle but is limited in its effect.

因此,一方面这些病毒不会大量复制,从而不会导致暴发性的感染,另一方面,它依旧在进行生命周期循环,只不过对其效用进行了限制

耶鲁公开课 - 生物医学工程探索课程节选

It turns out in the case of Hepatitis B, the way the lifecycle proceeds-- the cells make too much of the protein and not all of it gets assembled into the virus.

结果显示,在乙肝的病案中,病毒生命周期的发展情况,细胞制造了大量的蛋白质,但并不是所有的蛋白质都会组合成病毒

耶鲁公开课 - 生物医学工程探索课程节选