Cfels
(cfel 的复数) abbr. Cerenkov free electron laser 切伦科夫自由电子激光器
🗣️ 情景例句
Ah, you are an early bird then!
你原来是早起的人。
What beautiful trees those are!
那些是多么美丽的树呀！
His telescopic observations are justly immortal;
伽利略用望远镜所作的观察确实是不朽的，