航空 refers to the science and practice of flight, particularly involving the design, development, and operation of aircraft. This field encompasses various aspects, including aerodynamics, propulsion, and navigation. It plays a crucial role in transportation, enabling people and goods to travel quickly over long distances. The term is often associated with the aviation industry, which includes commercial airlines, cargo transport, and military aviation. Key components of this industry are aircraft manufacturers like 波音 and 空客, as well as regulatory bodies such as the 国际民用航空组织 (ICAO) that ensure safety and efficiency in air travel.