1. 垂直的;直立的
    Something that is vertical stands or points straight up.

    e.g. The climber inched up a vertical wall of rock...
           攀登者慢慢爬上了陡直的石壁。
    e.g. The gadget can be attached to any vertical or near vertical surface.
           该装置可以装在任何垂直或近似垂直的平面上。

2. 垂直方向
    The vertical is the direction that points straight up, at an angle of 90 degrees to a flat surface.

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    e.g. Pluto seems to have suffered a major collision that tipped it 122 degrees from the vertical.
           冥王星似乎受到过严重撞击，倾斜了122度。

3. 垂直线;垂直面
    A vertical is a line or structure that is vertical.

vertical是什么意思

    e.g. As long as the verticals align, the design will look regular.
           只要所有垂直面在一条线上，图案看起来就会很整齐。