枉费口舌的英文

waste one's breath

• 枉费:    waste; try in vain ...
• 口舌:    quarrel; dispute; ...
• 费口舌:    require a lot of t ...

例句与用法

1. He ' s flogging a dead horse in trying to persuade people to use canals instead of roads
   他拼命地劝人不要使用公路而去使用运河，真是枉费口舌。