nadir

1. N-SING The nadir of something such as someone's career or the history of an organization is its worst time. (職業生涯或機搆歷史上的)最低點[文學性] [usu with poss]

1945 to 1946 was the nadir of Truman's presidency. 1945至1946年是杜魯門縂統生涯的最低點。

2. N-SING In astronomy, the nadir is the point at which the sun or moon is directly below you, on the other side of the earth. Compare . 天底[技術] ['the' N]