Ngb
abbr. negative guard board 底片档板，阴极档板
🗣️ 情景例句
Fine, Grandpa. Fine!
很好 ，爷爷， 很好！
Neither.
一个都不喜欢。
and at the most critical juncture we took turns in watching that point.
在最紧急的时刻，我们轮流监视那段河流的险情。