Pnpndiode
[电] PNPN(四层)二极管
🗣️ 情景例句
Yes, I've been there a number of times.
我去过许多次了。
The bird that can sing and won't sing must be made to sing.
生来能唱的鸟，不愿唱也得叫它唱。
Of course.
当然可以。