Harmodotron
(产生毫米波的)电子束管, (正交场)毫米波振荡管
🗣️ 情景例句
When's the next class?
下一次上课什么时候？
Salt water and absence wash away love.
远离久别爱情淡。久别情淡？
'And where were you at the time?'
“那你当时在什么地方？”