Submatrix
[计] 子矩阵
🗣️ 情景例句
Does that make any sence?
这样清楚了吗？
Do you like painting?
你喜欢画画？
Several girls stopped and looked in one of the glass-topped tables.
几个女同学停下来仔细看看陈列在一张带玻璃罩的桌子里的东西。