[ .eivi'eiʃәn ] 柯林斯星级 ★★☆☆☆ BNC词频 5895 COCA词频 7923 n. 航空, 航空学, 飞行术 [法] 航空, 飞行, 飞行术 n. the aggregation of a country's military aircraft n. the operation of aircraft to provide transportation n. the art of operating aircraft 英汉双解字典由 ECDICT 提供