天頂

(1)the highest point (of something); "at the peak of the pyramid"

(2)最高点（何かの）

(3)the point above the observer that is directly opposite the nadir on the imaginary sphere against which celestial bodies appear to be projected

(4)天体が映っているように見える架空の球体で、天底と正反対の所にある観察者の真上の点

(5)the top or extreme point of something (usually a mountain or hill); "the view from the peak was magnificent"; "they clambered to the tip of Monadnock"; "the region is a few molecules wide at the summit"

(6)何かの頂点または極点（通常山または丘）

(1)