Harmodotron
(产生毫米波的)电子束管, (正交场)毫米波振荡管
🗣️ 情景例句
What's eating you?
什么正影响着你的情绪呢？
A man may talk like a wise man and yet act like a fool.
一个人可能说话像个聪明人，而行为像个大笨蛋。
That's really something.
那真是了不起！