ReadWriteQuiz
Chinese dictionary
v.vertical; be at right angles (to something); be on the perpendicular
这两条线垂直相交。
The two lines meet at right angles.
垂直距离很短。
The vertical distance is very short.
楼梯几乎是垂直的。
The staircase was almost perpendicular.
不垂直
be out of the perpendicular
垂直降落
vertical landing