Keymat
键罩纸, 键盘罩纸, 键盘衬垫
🗣️ 情景例句
Frank, you can learn as we go.
Frank，我们玩， 你跟着学。
I'm going to try to leave by 10:00.
我争取10点以前离开。
Some of the bigger firms are engaged in researches which are of such general and fundamental nature that it is a positive advantage to them not to keep them secret.
某些大公司进行的研究属于一般和基础性的研究。因此不保密对他们才有利。