Combinatorics
n. 组合学,组合数学
🗣️ 情景例句
It's certainly a pleasure to meet you.
认识你真是我的荣幸。
There was much news in the morning paper today.
今天的晨报上有许多新闻。
We can't handle an order that small.
这么少的数量，我们不能接受。