penknife
(also `pocket-knife), n (pl -knives) small knife with one or more blades that fold down into the handle, usu carried in the pocket 小摺刀. =>illus at knife 见knife插图.
🗣️ 情景例句
I don't know haw that could have happened.
我不知道怎么会发生那样的事。
What is bothering you?
什么在困扰你?
Many people in industry and the Services, who have practical experience of noise,regard any investigation of this question as a waste of time;