play the field (工作、恋爱等)不专一，三心二意

　　You'll never get Mark to go steady with you. He likes to play the field.

　　你永远别指望可以跟Mark稳定下来，他喜欢沾花惹草。

　　I don't think Mary is a person who loves to play the field.

　　我不觉得Mary是花心的人。

　　疯狂练习吧！