Combinatorics
n. 组合学,组合数学
🗣️ 情景例句
Don't you love the warm weather?
你不喜欢温暖的天气吗？
Besides the required courses, I'm taking an elective in the Lab Science.
除必修科目外，选修科目我选了实验科学。
Then you can pick up a hire car and travel around.
然后你可以开着租来的车四处旅行。