Developed nations
发达国家
🧩 词语组成解析
a. 发达的（国家或地区）；成熟的
n. 国家（nation的复数）
🗣️ 情景例句
You don't recognize me, do you?
你不认识我了， 是吗？
All things are difficult before they are easy.
凡事都是先难后易。
In the library she has got books on many different subjects.
在图书馆里她准备了各种科目的书籍。