Bijection
[计] 双射, 一一对应
🗣️ 情景例句
If you need any help, I'll be ust over here.
如果你需要任何帮助，我都随时待命。
I'm twenty-two (years old).
我二十二了。
Many young girls dream of being a fashion model.
许多年轻女孩梦想成为时装模特儿。