Nadb
abbr. National Aerometric Data Bank 全国气体数据库
🗣️ 情景例句
Like what special matters?
什么样的特殊状况？
It's worth seeing.
它绝对值得一看。
What will be the population of these countries by the end of the twentieth century?
到20世界末较发达国家的人口将是多少？