Quadratron
热阴极四极管
🗣️ 情景例句
Thanks very much. It was a great party!
非常感谢，今天的聚会棒极了！
I'm reading the newspaper downstairs.
我在楼下看报纸。
The mower firmly refused to mow, so I decided to dismantle it.
修完后割草机还是纹丝不动。于是，我决定把它拆开。