这是一种生理现象，这就是所谓的乳牙退换。

This is a physiological phenomenon, which is replacing the so-called deciduous teeth.

youdao

两者的内在感觉是一样的，这种吸引力纯粹是一种生理现象。

The internal feeling is the same. The attraction is purely physical, for better or worse.

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虽然身高减少的部分原因是衰老所产生的骨骼收缩以及其他生理现象，但一些研究人员说这绝非巧合。

While this loss of stature is attributed partially to shrinking bones and the other physiological effects of aging, some researchers say this is no coincidence at all.

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We are all endowed, he says, with a kind of natural right to life and the desire to preserve oneself is not just a biological fact, although it is also that, it is for him a moral right, it is a moral entitlement, every being has a fundamental right to its own life.

他说，我们具有，一种对生活的自然权利,和保护自己的欲望,这不只是一种生理现象，虽然是一种生理现象，对他来说这更是一种道德权利，是一种道德资格，每个人最自己的生活都有这种根本权利。

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