Zài / píngmiàn / zhíjiǎo / zuòbiāo / xì / zhōng / héng / zuòbiāo / zhóu / hé / zòng / zuòbiāo / zhóu / hùxiāng / chuízhí

在平面直角坐标系中，横座标轴和纵座标轴互相垂直。

In a Cartesian coordinate system, the horizontal and vertical axes are perpendicular to each other.