Harmodotron
(产生毫米波的)电子束管, (正交场)毫米波振荡管
🗣️ 情景例句
It's not necessary to whisper, Harry.
没有必要压低声音说话， Harry。
No. It only goes as far as Main Street, but you can get the Number 31 there.
不去，最远只到正街。不过你可以到那里再乘31路。
Where are you going to spend your holidays this year,Gary?
加里，今年你们打算去哪里度假？