Febetron
冷阴极脉冲, β射线管, 相对论性电子发生器
🗣️ 情景例句
Happy birthday, Carl.
生日快乐 ，Carl。
Dexterity comes by experience.
熟练来自经验。
At the head of the queue was an old woman.
排头的是位老太太。