Kathetron
一种有外栅极的三极管, 辉光放电管
🗣️ 情景例句
In my opinion, winter in Beijing is not very cold.
我觉得北京的冬天不是特别冷。
All roads lead to Rome.
条条道路通罗马。
They discovered that the farther away the feeding station was, the slower the dance was.
他们发现离喂食点越远，蜜蜂就跳得越慢。