Additive identity
[计] 加性单位元素, 加法恒等元
🧩 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
Why were you out of work for so long?
你为何这么久没有工作？
It doesn't seem like that.
似乎不象是那样。
I had a little accident last Sunday.
上星期天我出了个小事故。