they are both as happy as they are old,怎么翻译

问题描述:

they are both as happy as they are old,怎么翻译

他们老了也很快乐。

他们都是一样快乐,因为他们都老了

尽管他们已老,但幸福不减当年.

他们老了,他们还是一样的快乐,