| 例句 |
I tried to start the engine again,but it was no-go.我试图重新发动，但总是白搭。You tell me in the same breath that it is useless to investigate the matter, and that you desire me to do it.你一方面对我说调查此事是白搭，另一方面却又希望我去调查。Training is worthless unless there is proof that it works.除非能证明训练有效，否则就是白搭。 |