我们可以说一条河流年轻或年老。

A river can be called young or old.

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富贵或贫穷的，年轻或年老的，我们每人的一天都有24小时。

Rich or poor, young or old, we each have 24 hours in a day.

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这是一个大多数人(年轻的或年老)忘记的课。

This is a lesson most people (young or old) forget.

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根本没有发现一颗恒星，年轻的或年老的，都没有。

No stars at all, young or old, were found.

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根本没有发现一颗恒星，年轻的或年老的，都没有。

No stars at all, young or old, were found.

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