Ignitron
[电] 水银半波整流管
🗣️ 情景例句
You won't believe it, Grandpa,
你绝不会相信， 爷爷，
Never trust another what you should do yourself.
自己应该做的事，决不要委托别人做。
No. Two visitors have just arrived and I want to give them something nice to eat.
不是。我家刚来了两位客人，我想煮些好吃的招待他们。