单词：nadirs
(nadir 的复数) n. 天底, 最低点
plural of nadir
n. an extreme state of adversity; the lowest point of anything
n. the point below the observer that is directly opposite the zenith on the imaginary sphere against which celestial bodies appear to be projected
n. an extreme state of adversity; the lowest point of anything
n. the point below the observer that is directly opposite the zenith on the imaginary sphere against which celestial bodies appear to be projected