Combinatorial mathematics
[计] 组合数学
🧩 词语组成解析
[计] 组合的
🗣️ 情景例句
How do you want your hot dogs?
你的热狗想要什么调料？
Study sickness while you are well.
居安思危。
From a heavy gun that was raised, the captain realized that the ship must have been a cruiser.
从捞起的一门大炮来看，船长认为那艘船一定是艘巡洋舰。