used to tell somebody they shouldn’t think about something or do something because it is not as important as something else, or because you will do it（因为某事是次要的，或因为你要做某事）别想它，先别管
Never mind your car—what about the damage to my fence?先别管你的车，我的围栏撞坏了，怎么办？
Never mind washing the dishes—I'll do them later.别管洗餐具的事了，等一下我会洗。