Submatrix
[计] 子矩阵
🗣️ 情景例句
Choice?
抉择？
They that (or who) live longest see most.
活得最长，见识最广。
probably vertical, cliffs, and gentle sediment-covered terraces,
乃至垂直的峭壁和沉积物覆盖的缓和的阶梯地带，