Aviation
01
航空
the aggregation of a country's military aircraft
语法信息
有生性状态
抽象
形态构成
复合词
不可数
02
航空
travel via aircraft
03
航空
the art of operating aircraft
04
航空
the process of flying an aircraft
05
航空, 航空学
the study of the design, development, and operation of aircrafts, focusing on principles of aerodynamics, propulsion, and material science
