Chalnicon
硒化镉视象管, 硒化镉光导摄象管
🗣️ 情景例句
Thanks for asking.
谢谢你的邀请。
My friend reads and writes several languages.
我的朋友能读并写好多种语言。
Hello! Could I speak to the headmaster, please?
您好！我能和校长通话吗？