Ngb
abbr. negative guard board 底片档板，阴极档板
🗣️ 情景例句
And very bright.
而且非常聪明。
My friend phoned me at 10 a.m. Yesterday.
我的朋友昨天上午10点打电话给我。
He can't make it today. He has to stay at home.
他今天不行了。他得呆在家里。