Kathetron
一种有外栅极的三极管, 辉光放电管
🗣️ 情景例句
What is the most important thing for you to be happy?
你认为对你来说开心最重要的是什么？
The sooner, the better.
越快越好。
You'd better finish the work today, and bring it tomorrow.
你最好今天完成这作业，明天把它带来。