Harmodotron
(产生毫米波的)电子束管, (正交场)毫米波振荡管
🗣️ 情景例句
and this is Joanne Thompson--and Abe Lucas,
这是Joanne Thompson， 还有Abe Lucas
I ought to not bother him any more.
我应该不要打扰他了。
Have you received a letter from Jim yet?
你收到了吉姆的来信没有？