Emitron
[电] 阴极发射管
🗣️ 情景例句
This is a brand new product; it proved to be a craze in the American market.
这是一个全新的产品，在美国市场掀起了一股热销潮。
I'll call the roll before class.
课前我要点名。
Yes. I went to bed too late last night.
是的。我昨晚睡得太晚。