Ngb
abbr. negative guard board 底片档板，阴极档板
🗣️ 情景例句
Oh, don't do that, George!
噢，乔治，不要这么做。
I was sick yesterday,but I'm better today.
我昨天病了，但是我今天好一些了。
Did you lose it?
丢了吗？