Unit matrix
[计] 单位矩阵
🧩 词语组成解析
unit
['ju:nit]
n. 单位，单元;装置;个体;[数]单位数;
🗣️ 情景例句
What's this for?
为什么要送我花？
It's about time to get up.
差不多该起床了。
You mustn't come home late.You must be home at half past ten.
你不准回家太晚，你必须在10点半到家。