Pnpndiode
[电] PNPN(四层)二极管
🗣️ 情景例句
You'll never get to college to find out, Robbie,
你根本就进不了大学去探究这个问题的答案 ，Robbie，
It's a small world.
这世界真小。
Inevitably the repair job was not quite so simple.
事实上，修理工作远不是那么简单。