He is a smooth operator. Don't underestimate him.

他是个精明圆滑的人，别低估他。

《柯林斯英汉双解大词典》

In reality, Gates is a smooth operator who, despite his uncombed hair, baby face and disheveled appearance, knew exactly what he was doing every step of the way.

在现实中，尽管盖茨的头发总是乱糟糟的，又长着张娃娃脸，不修边幅，他可是个老练的生意人，每走一步都成竹在胸。

youdao

He's a smooth operator.

他是个圆滑的人。

youdao

The first thought that came to mind for this regular-Brooklyn-driver was that in the given circumstances, Electric Drive is a smooth operator.

FORBES: Smart Fortwo Electric Drive Is On Time

John Rogers, the chief officer of TTS, said his department had tried to make the transition to the new operator as smooth as possible.

BBC: Jersey's Connex bus workers in 24-hour strike action