Cathetron
[电]外控式三极汞气整流管
🗣️ 情景例句
What place would you most like to visit?
你最想到哪个地方旅行？
Mr. Green, Mr. Smith is here.
格林先生，史密斯先生在这里。
Yes. I bought this blouse here last week, but there seems to be something wrong with it.
是的。上星期我在这里买了一件衬衣，但似乎有点毛病。