Pnpndiode
[电] PNPN(四层)二极管
🗣️ 情景例句
and happy Thanksgiving to you and your family, too.
祝你和你的全家感恩节愉快。
Don't be scared of him.
不要怕他。
You may have heard of Birth Control.
你们也许听说过控制人口出生的措施。