Carboxylic acid
高中 Senior High[化] 羧酸
🧩 词语组成解析
[机] 羧基的
🗣️ 情景例句
He's a very famous person in Chinatown. He's also from your home city, Peking.
他在唐人街大名鼎鼎，他也是从你的家乡北京来的。
It is never too late to learn.
什么时候学习都不晚。
The seeds must be carefully chosen; they must fall on good ground;
那就必然从精选良种做起，然后将其植入肥沃的土地，