Kluystron
[计] 速调管
🗣️ 情景例句
Grandpa! Grandpa!
爷爷！ 爷爷！
He devoted his life to promoting world peace.
他一生致力于促进世界和平。
All that is in my mind when I meet a young person.
每逢我遇到年轻人，脑子里就想到，