aseptic

adj. 无菌的，洁净的

ascend, ascendancy, ascendancy (also ascendency), ascendant, ascendant (also ascendent), ascension, Ascension Day, ascent, ascertain, ascertainable, ascertainment, ascetic, ascetically, asceticism, ascorbic acid, ascribable, ascribe, ascription, ASEAN, asepsis, asexual, asexuality, ash, ash blonde, ash plant, Ash Wednesday, ashamed, ashen, ashes, ashore, ashpan, ashtray, ashy, Asia, Asian, Asiatic, aside, aside from, asinine, ask,