Harmodotron
(产生毫米波的)电子束管, (正交场)毫米波振荡管
🗣️ 情景例句
Michelle and her friends are at the aquarium in Brooklyn.
Michelle和她的朋友们在参观 Brooklyn的水族馆。
There's still hope.
还是有希望的。
Holiday hotels tend to cater for one nationality of visitors especially, sometimes exclusively.
假日旅馆有只接待来自一个国家的旅游者的倾向，有时会达到排他的程度。