App.
abbr. (=apparatus； apparent；appended；appendix；appointed；apprentice；approved；approximate)\\n
🗣️ 情景例句
And you, Susan Stewart,
那么 ，Susan Stewart
You don't need to interrupt!
不用你插嘴！
What was the population of the more developed countries in 1950?
1950年较发达国家的人口是多少？