别白费口舌的英文

save one’s breath

• 别:    change
• 白费:    labour in vain
• 口舌:    quarrel; dispute; ...

例句与用法

1. You can save your breath . you ' ll never persuade her
   别白费口舌了，你决说服不了她。
2. Don ' t waste your breath trying to persuade them , they ' ll never listen
   别白费口舌规劝他们，他们不会听你的话的。