英汉词典

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。