Nuclear substitution
[化] 环上取代; 环上取代作用
🧩 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
But please call first.
不过，请你先打电话。
A friend exaggerates a man's virtue, an enemy his crimes.
朋友宣扬人的美德，敌人夸大人的罪过。
They have to work hard to support their family.
他们必须努力工作来支持他们的家。