Tetrode
n. 四极管
🗣️ 情景例句
I haven't seen you for a long time.
很久没见了。
Sufficient for the day is the evil thereof.
一天的不幸已够人受的了，别再自寻烦恼。
Were there any exciting incidents during your journey?
你们在旅行中有没有什么令人激动的事情？