Harmodotron
(产生毫米波的)电子束管, (正交场)毫米波振荡管
🗣️ 情景例句
Come on, you big guy.
过来， 你这个好小子。
Poverty is the mother of health.
缺乏是健康之母。
I left the bag in the hall and Robert and I went into the living room where we talked for a couple of hours.
我把纸袋放在门厅里，与罗伯特一起进了起居室，在那里聊了好几个钟头。