如果你的宝宝身体差的和初生婴儿一样脆弱的话，那可以服用一下。

If your baby physically poor and vulnerable, like new-born babies, it can take you.

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随着时间的推移，她的身体状况越来越差。

As time went by, her health got worse.

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我们的身体比以前差，这就是因为我们现在的生存环境和人类以前的生存环境有很大的不同。进化是人类为了适应野外的恶劣生存环境而产生的。

Our own bodies are worse off than most simply because of the many differences between the wilderness in which we evolved and the modern world in which we live.

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