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
when I was about eighteen years old.
那时我差不多十八岁。
Friends (the best of friends) must part.
好友终有分手时。
Everything has its beginning.
凡事都有开端。