Gastriode
充气三极管, 闸流管
🗣️ 情景例句
Excuse me, I can't seem to find my seat. Can you help me?
不好意思，我好像找不到我的座位了。您能帮帮我吗？
Eagles fly alone,but sheep flock together.
鹰爱独飞羊爱群。
How many do you need?
你需要多少？