waste one's breath/wordsspeak pointlessly; speak or argue with no result 白费唇舌 * The old man is so stubborn that you'd be only wasting your breath trying to make him change his mind. 那个老头子太固执，你去劝他改变主意，不过是白费口舌。 * I saw that I was wasting my words; he refused to believe me. 我发现我是在白费口舌，他根本不相信我。 * Don't argue with Frank any longer. You are only wasting your breath trying to get him to contribute to the Red Cross. 不要与弗兰克再争下去了，你要他给红十字会捐款只不过是白费口舌而已。 |