Nadb
abbr. National Aerometric Data Bank 全国气体数据库
🗣️ 情景例句
Sir, I thought this was an emergency.
先生，我想这是一位急病患者。
One foe is too many; and a hundred friends too few.
朋友成百犹觉少，仇敌一人已嫌多。
They lived there before they came to China.
在他们来中国前。