beat a dead horse in Chinese

• 白费口舌，白费力气
• 鞭打死马令其奔驰(徒劳)
• 鞭打死马令其宾士（徒劳）
• 在已经失去意义的问题上白花力气

• "beat" in Chinese:    vt. (beat; beaten , 〔古语〕 bea ...
• "dead horse" in Chinese:    1.预付的工资。 2.旧债。 3.无益的话题，徒劳的事物 ...
• "be dead beat" in Chinese:    精疲力竭
• "dead beat" in Chinese:    不摆的; 非周期的; 赖帐的人, 手头不宽裕的人; 懒人; 速示的; 直进式
• "dead horse" in Chinese:    1.预付的工资。 2.旧债。 3.无益的话题，徒劳的事物。
• "dead air beat" in Chinese:    非周期的
• "dead beat compass" in Chinese:    不摆罗经
• "dead beat discharge" in Chinese:    不摆放电; 非周期放电
• "dead beat escapement" in Chinese:    不摆擒纵机
• "dead beat galvanometer" in Chinese:    不摆电疗; 不摆电流计; 不摆检流计; 速指电疗
• "dead beat instrument" in Chinese:    不摆式仪表; 速示测试仪器; 速示仪表
• "dead beat measurement" in Chinese:    不摆测量
• "dead beat meter" in Chinese:    速示仪表
• "dead beat stability" in Chinese:    非周期稳定性
• "dead beat(tired)" in Chinese:    烂醉如泥

• Quit asking him to do you a favor . you ’ re beating a dead horse
  别再求他帮你忙了，你这是白费劲。
• I ' ve already made up my mind . there ' s no sense beating a dead horse
  我已经下了决心，不要再白费口舌了。
• You are beating a dead horse if you are trying to make him change his political views
  你要想改变他的政治观点，那是徒劳无益的。
• " it is not my predilection to go beating a dead horse . . . but i have little pity for a cannibal .
  我没兴趣对死人出手. . .但是我也不会同情吃人的家伙。