他和简曾有过不正当关系。

He had an illicit association with Jane.

已婚男上司和办公室里的女下级在搞不正当关系。

Married male supervisors were carrying on affairs with female subordinates in the office.

这就像有了不正当关系，然后约会，像蜜月一般慌慌张张的。

It's like having an affair, then they meet and it's like a whirlwind honeymoon.

俗语，用于形容那些想通过不正当关系向上爬的野心十足的人。

Colloquial term used to describe an upwardly ambitious and aggressive person who wants to climb the ladder by having questionable relationships.