Radiotron
真空管, 三极电子管
🗣️ 情景例句
She's been sneaking around on her husband.
她一直在欺骗她的丈夫。
Would you please pass me the sugar?
可以请你把糖递过来吗？
There are twenty-four boys, and twenty-two girls.
二十四个男生，二十二个女生。