the aircraft, or the number of aircraft, flying in an area or along a route

The military training site is well outside the path of commercial air traffic. 军事训练场地完全在商业空中交通的路径之外。

There have been a large number of noise complaints from residents near the airport, due to the increased air traffic. 由于空中交通量增加，机场附近的居民多次提出了噪音投诉。