Combinatoric
a. 【数学】组合学的
🗣️ 情景例句
If you'd like to hear some new English songs, I suggest you download them from the web.
如果你想听一些新的英文歌，我建议你上网下载。
Let's call it a day.
我们今天就到这儿吧。
What's that over there?
那边的是什么呀？