Cfel
abbr. Cerenkov free electron laser 切伦科夫自由电子激光器
🗣️ 情景例句
Is that you, Susan?
是你吗， Susan？
I'm all washed up.
我都完事了。
Since the sea covers the greater part of the earth's surface,
既然海洋覆盖着地球的大部分表面，