azimuth

n 1 (astronomy 天) arc of the sky from the zenith to the horizon 地平经度（从天顶到地平圈在天空的弧度）. 2 (in surveying) angle between this arc and the meridian （测量中）方位角（此弧与子午圈之间的夹角）.

awhile, awkward, awkwardly, awkwardness, awl, awning, awoke, AWOL, awry, ax, axe, axe (also esp US ax), axial, axiom, axiomatic, axis, axle, ayatollah, aye (also ay), azalea, Azores, B, B and B, B and B (also b and b), B Ed, B Eng, B Litt, B Mus, B Phil, B, b, B-road, B.A., B.C., B/L, BA, baa, babble, babbler, babe, babel,