below the belt意思是“不合乎规则，不公正，不符合道德”

【例句】
The team is becoming notorious for hitting below the belt in the games it plays.
由于在比赛中屡次犯规，这支球队声名狼藉。

Do you think it's a bit below the belt what they're doing?
你觉得他们的做法是不是有点儿不太光明正大？