"My dear boy," answered the Dormouse to cheer him up a bit, "why worry now?"

“我亲爱的孩子，”土拨鼠为了让他高兴一点，回答说，“现在何必担心呢？”

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We understand now that eugenics was an illegitimate science, so why even worry about it today?

现在我们理解优生学是一种非法的学说，但为何今天我们还要对此忧虑呢？

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The possible evolution of such an infectious ability in the bird flu now winging its way around the world is why officials worry about a pandemic today.

这种鸟类流感可能进化出的感染能力目前正在世界各地飞行，这也是官方对当今禽流感流行忧虑的原因。

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