Cfel
abbr. Cerenkov free electron laser 切伦科夫自由电子激光器
🗣️ 情景例句
Well, I guess we all have to take our mind off work once in a while.
对，我们都应该忙里偷闲。
I ought to think about it.
我应该再三考虑。
But even the mosquito has been subdued by attention to drainage and by chemical sprays.
然而即使蚊子，也由于我们注意清理污水和喷洒化学药品而被制服了。