3) be a fool to oneself
干费力不讨好的事
4) You'll get small thanks for it.
你将吃力不讨好。
5) keep in with
不断讨好
6) He doesn't play up to his boss.
他不讨好老板。
补充资料：费力
耗费力量：～劳心 ㄧ他有气喘病，说话很～。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条