1. Waste one's breath 白费唇舌 him, it's no use talking to him, you'll only waste your breath. 和他谈话没有一点用处，你只是在白费唇舌。
2. W waste one's breath 白费唇舌例句: it's no use talking to him, you'll only waste your breath. 和他谈话没有一点用处，你只是在白费唇舌。