Frustrane
[医] 无效的
🗣️ 情景例句
Oh, it's going to be all right.
不会有问题了。
Can I cancel this ticket?
我可以取消这张票吗？
Many people in industry and the Services, who have practical experience of noise,regard any investigation of this question as a waste of time;
在工业部门工作和在军队中服役的许多人对噪音有切身的体会，他们认为对这个问题进行调查是浪费时间，