Kathetron
一种有外栅极的三极管, 辉光放电管
🗣️ 情景例句
No, no. I'll do that.
不， 不。我自己来。
What's the weather like today?
今天天气如何？
All his life he reached out for the truths of spirits and gods.
他的一生都在追求神灵的真谛。