pro开头的形容词

例句：

It could be a bit problematic, legally speaking.

从法律上说，可能是有点问题。

We are deeply concerned to get out of this problematic situation.

我们非常想摆脱这种问题重重的`局面。

He decided to turn professional.

他决定转为职业人员。

She became a professional mezzo-soprano.

她成为一名专业的女中音歌手。