Gastriode
充气三极管, 闸流管
🗣️ 情景例句
Hello, this is Wang Ming. May I speak to Gao Ling, please?
喂，我是王明，我可以和高玲通话吗？
You cannot sell the cow and sup the milk.
你不可能出售乳牛，同时又要喝牛奶。
They finally found a small gold coin which was almost worthless.
但最后找到的是一枚几乎一钱不值的小金币。