Laptops are refreshed yearly, cell phones even more frequently, and with a life cycle that short, where's the incentive to build something to last?

笔记本电脑每年都会更新换代，手机更加频繁，在这样短的生命周期中，没有人鼓励制造可以永存的产品。

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Cell cycle is the basic process of cell life activities.

细胞周期是细胞生命活动的基本过程。

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Programmed cell death (PCD) is a cell death process that is a normal part of the life cycle of a multicellular organism.

细胞程序性死亡是多细胞有机体生命周期中正常的组成部分，细胞程序性死亡过程的存在对生物体是一种保护机制。

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The evidence of this can be seen almost everywhere life-cycle of products, number of patents filed in the US Patent Office, amount of cell phone activity across national boundaries on and on and on.

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