Definition: the planes or ships moving around an area Level: C2
空中交通管制负责管理大西洋上空的交通。
Air traffic control manages the ___traffic over the Atlantic.
这个港口处理客运和货运交通。
The port handles both passenger and freight ___traffic.
由于假期，城市上空的空中交通非常繁忙。
There's heavy air ___traffic over the city due to the holiday.
