play up to someone
phrasal verb with play verb uk/pleɪ/ us/pleɪ/
讨好，巴结（某人）
to try to make someone like you and treat you well by behaving in a way you think will please them
Julia knows how to play up to the supervisors - she can always get time off work when she wants it. 朱莉娅懂得如何讨好上司——这样她随时都能请假。