Radiotron
真空管, 三极电子管
🗣️ 情景例句
Do you think Susan and Harry will get married?
你觉得Susan和Harry会结婚吗？
It is better to wear out than to rust out.
与其锈掉，不如用坏。
Friday, Saturday and Sunday in the country!Aren't you lucky!
星期五、星期六和星期日在乡下过！你们真幸运啊！