Idfg
abbr. intracavity CW difference frequency generation 内腔连续波差频振荡
🗣️ 情景例句
I'm sorry you have to leave so soon.
很遗憾你不能多呆会儿。
Sorry, I don't.
对不起，我没有。
Well, next time you'd better take my advice!
好啦，下次你最好还是听从我的劝告！