然而，后一个问题，生物学已经有了几种解释，它们都以长寿命与生殖能力的平衡为中心。

For the latter, though, biology has several explanations, all of which revolve around a trade-off between longevity and the ability to reproduce.

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新兴的合成生物学在夸大的宣传与理智的希望之间寻找平衡，而它的时代即将来临。

The new science of synthetic biology is poised between hype and hope. But its time will soon come.

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巨噬细胞是动脉粥样硬化的发病机制的组成部分，在炎症和胆固醇平衡运作，其生物学特性的一个重要课题。

The macrophage is integral to the pathogenesis of atherosclerosis, functioning at the intersection of inflammation and cholesterol homeostasis, making its biological properties an important topic.

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