Combinatoric
a. 【数学】组合学的
🗣️ 情景例句
If there's anything you need while you're in town, just let me know.
你在镇上有什么需要，就告诉我吧。
Cast not out the foul water till you bring in the clean.
清水未来，莫泼赃水。
Take this medicine three times a day.
这药每天服3次。