Cathetron
[电]外控式三极汞气整流管
🗣️ 情景例句
Yes, I have been working in an advertisement company in the last two years.
是的，在过去两年里，我一直在一家广告公司工作。
So long.
再见
Life there is simple and good.
在那里，生活简单又美好。