Plifier
电子束半导体线性低通放大管
🗣️ 情景例句
Well, he's asleep--finally.
好了， 他终于睡着了。
What's your opinion?
你的意见是什么？
We're going to meet here, outside the school gate, at two o'clock.
我们打算两点钟在校门外见面。