Substitution operation
[计] 替换操作
🧩 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
He's just fooling around.
他用情不专。
It's a beautiful country with many large rivers.
这个国家很美，它有很多大河。
He no sooner recovers his equilibrium than the next porpoise comes along and hits him another crack.
海龟刚恢复平衡，第二只海豚又冲过来猛击一下。