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
What's the long buildings?
那座长形的建筑是什么？
The best fish swim near the bottom.
好鱼游水底。
You don't keep your word.
你不守信用。