He is like a childish adult.

他就像一个幼稚的成年人。

youdao

He is a childish man.

他是一个幼稚的男人。

youdao

He has a childish smile.

他笑起来很稚嫩。

youdao

So I realize that this was among a more childish demonstrations that I could come up with to illustrate this point.

我意识到这个一个很幼稚的演示,我可以举例来说明这一点。

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Mere peccadilloes a childish electorate is prone to until it grows up and outgrows them.

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If at any time it has demonstrated a childish need for discipline, this moment is it.

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At a childish level, this is badmouthing a classmate and refusing to acknowledge his birthday.

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