perpendicular

柯林斯词典

1. ADJ A perpendicular line or surface points straight up, rather than being sloping or horizontal. 垂直的[usu ADJ n]
We made two slits for the eyes and a perpendicular line for the nose. 我们划了两道缝儿做眼睛,一条竖线做鼻子。
The sides of the mountain are almost perpendicular. 山的两侧几乎是垂直的。
2. ADJ If one thing is perpendicular to another, it is at an angle of 90 degrees to it. 垂直于的[正式] [usu v-link ADJ 'to' n]
The left wing dipped until it was perpendicular to the ground. 左翼下垂至与地面成90度角。