Fexitron
冷阴极脉冲X射线管
🗣️ 情景例句
No. I sold the house and the furniture,put a few personal things in an old trunk,
不。我把房子和家俱都卖了，剩下一些东西放进一个旧衣箱，
Idle young, needy old.
少壮不努力，老大徒伤悲。
The whole world knows that.
全世界都知道。