1 ADJ-GRADED [usually ADJ n] 垂直的;笔直的 A
perpendicular line or surface points straight up, rather than being sloping or horizontal.
垂直的;笔直的 2 ADJ 垂直(于)的;成90度角的 If one thing is
perpendicular to another, it is at an angle of 90 degrees to it.
垂直(于)的;成90度角的 [formal] SYN at right angles, at 90 degrees
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