Cardinality
[计] 基数
🗣️ 情景例句
Tom gave Helen an apple in exchange for a piece of cake.
汤姆用一个苹果和海沦换一块蛋糕。
Rats leave (or desert or forsake) a sinking ship.
船沈鼠先窜。
That's a good buy.
那买得便宜。