这样可以更好地判断笔画是水平的、垂直的还是对角的。

That gives it a better sense of whether a stroke was intended to be horizontal, vertical, or diagonal.

youdao

位置优先原则：在判断浮动框位置时，最佳垂直限制优于最佳水平限制。

Position precedence rule. When resolving the float box position, the optimum vertical constraint takes precedence over the optimum horizontal constraint.

youdao

呃，我们学过怎么用点乘,来判断两个向量是否垂直。

Well, we've learned how to detect whether two vectors are perpendicular to each other using dot product.

youdao