If the horizontal line drawn is aligned with a polygon vertex, then only the segments that are below the line are counted.

如果所绘制的水平线与一个多边形顶点对齐，那么只计算位于该线下方的部分。

First, draw a horizontal line.

首先，画一条水平线。

Specifies a horizontal line through the font.

是否指定贯穿字体的横线。

Of all lines, a horizontal line feels the most peaceful.

在所有的线中，横线让人感觉最平和。

Designed for vertical or horizontal line operations.

适用于垂直或水平管道应用。