这些列可以按正序或倒序排序。

These columns can be sorted in ascending or descending order.

youdao

第一个列向量是正2，负1，对么？

So the first column is over 2 and down 1, right?

youdao

想象一下你正呆在一艘远洋轮船上，这时一道十层楼高的水墙像一列不可阻挡的货运列车冲向你。

Imagine you're on an ocean liner when a wall of water ten stories tall RACES toward you like an unstoppable freight train.

youdao