The vertical line meets the horizontal one here. 垂直线与水平线在此相交。
When a user selects an object, a vertical line extends from the center of the object to the grid. 当用户选择一个对象后,从对象的中心有一条垂直线扩展到网格。
Assuming a horizontal block of ups and downs on the ground, the water's surface and materials County line is a continuous contour. 假设用一个水平面街区高低起伏的地面,则水品县与地面的交线就是一条连续不断的等高线。