astrolabe

n. 星盘（古代星位观侧仪）

asteroid, asthma, asthmatic, astigmatic, astigmatism, astir, astonish, astonished, astonishing, astonishingly, astonishment, astound, astounding, astrakhan, astral, astray, astride, astringency, astringent, astro-, astrologer, astrological, astrology, astronaut, astronautics, astronomer, astronomical, astronomy, astrophysics, astute, astutely, astuteness, asunder, Aswan Dam, asylum, asymmetric, asymmetrical, asymmetry, asynchronous, at,