Identity function
[计] 恒等函数, \是\函数
🧩 词语组成解析
identity
[ai'dentiti]
n. 身份;[逻]同一性;个性;[数]恒等（式）;
🗣️ 情景例句
He gave them to me to hold on to them
他给我戒指， 要我自己保管，
The great fish ear up the small.
弱肉强食。
Do you give each other presents at Christmas?
圣诞节你有送礼物给别人吗？