Ngb
abbr. negative guard board 底片档板，阴极档板
🗣️ 情景例句
He jumps from one job to another.
他经常换工作。
I particularly like English literature.
我对英国文学情有独钟。
There's a label on the handle with my name and address on it.
箱把上有一标签，上面写着我的姓名和住址。