Donutron
笼圈式谐振腔磁控管
🗣️ 情景例句
I talked to Mr. Marchetta.
我跟Marchetta先生谈了。
He who makes no mistakes, makes nothing.
不犯错，将一事无成。
I realized that they would be very worried, but that they would trust our good sense, wherever we were.
我想他们会很担心，但是无论我们在什么地方，他们都会相信我们的处事能力。