Substitution theorem
[计] 代换定理
🧩 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
Very few people last in this class for the full hour the very first time.
很少人能够第一次撑完一个小时的课。
While the dog gnaws bone,companions would be none.
狗啃骨头无同伴。
Very interesting.
很有意思。