I wish I were young again, but getting older has its compensations.

我要是能再次年轻就好了，但上了年纪也有上了年纪的好处。

《牛津词典》

Want to be young again?

想再次变年轻吗？

youdao

Laugh to feel young again.

微笑能使你感觉更加年轻。

youdao

When Zephyr also has,with his sweet breath, Quickened again,in every holt and heath, The tender shoots and buds,and the young sun...

VOA: special.2011.01.05

If I were young again, I would go out on the town.

如果我能再年轻一回，我会走出这个小城。

I wish 实战 - SpeakingMax英语口语达人

I wish I were young again.

多希望再年轻一回。

I wish 实战 - SpeakingMax英语口语达人

And proving that what was old can be young again there is a newfound relevance to that doctrine.

FORBES: Does God Want You to Live More Sustainably?

Morrie has something to say about those who want to be young again.

CNN: Tuesdays with Morrie

Whereas his reputation once suffered from being so diverse, it is his hop-scotching across disciplines that makes him seem so young again.

WSJ: Avant-Garde Film's Godfather | Hans Richter | Los Angeles County Museum of Art | Richard B. Woodward