Definition: the pipe that waste gas from a vehicle's engine flows through Level: C1
一阵响亮的嘎嘎声从汽车的排气管传来。
A loud rattling sound came from the car's ___exhaust.
排气管排出的烟雾加剧了城市的雾霾问题。
The fumes from the ___exhaust were contributing to the city's smog problem.
机修工发现排气管上有一道裂缝，正是泄漏的源头。
The mechanic identified a crack in the ___exhaust as the source of the leak.
