Submatrix
[计] 子矩阵
🗣️ 情景例句
I'm his friend.
我是他的朋友。
The dog that fetches will carry.
来道是非者，便是是非人。
My dentist had just pulled out one of my teeth and had told me to rest for a while.
我的牙科医生刚刚给我拔掉了一颗牙，叫我休息一会儿。