Bijective function
[计] 双射函数
🧩 词语组成解析
[计] 双射的
🗣️ 情景例句
And I'd like to get her a nice gift ...
我还想给她一份精美礼物……
Did you get any sleep on the plane?
你在飞机上睡觉了吗？
Walking up and down the stairs would beat any exercise machine.
上下楼梯可比什么健身器都要好。