He is so young, but quite clever.

他很小，却很聪明。

youdao

He may appear (to be) a fool, but actually he's quite clever.

他可能看起来很傻，不过实际上他相当聪明。

youdao

He is quite smart but he is not what I would call a clever man.

他相当聪明，但在我眼内他不算是聪明人。

youdao

It may not quite do that - but the live demo of the new translation service looked very clever, as did the standout eye-tracking feature which enables you to pause a video by simply looking away, then restart it by focusing on the screen again.

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