Aromatic substitution
[机] 芳(香)族取
🧩 词语组成解析
substitution
[ˌsʌbsti'tju:ʃən]
n. 代替;代用;替换;<化>取代（作用）;
🗣️ 情景例句
Yes, he's my brother.
是的。他是我哥哥。
Pleased to meet you.
认识你很高兴。
In the evening, the children come home from school.They arrive home early.
傍晚，孩子们放学回家。他们到家很早。