n. the point above the observer that is directly opposite the nadir on the imaginary sphere against which celestial bodies appear to be projected
常见例句
1
The inhabitants of the tropic, whose shadows in one part of the year are cast to the north, and in the other to the south, according as the sun is south or north of their zenith.
2
n (astronomy) the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing
3
the point below the observer that is directly opposite the zenith on the imaginary sphere against which celestial bodies appear to be projected
