柯林斯詞典exhaust pipe (exhaust pipes) 1. N-COUNT The exhaust pipe is the pipe that carries the gas out of the engine of a vehicle. 排氣琯 返回 exhaust pipe劍橋詞典the pipe at the back of a vehicle or on a machine through which waste gas escapes from the engine （車(chē)輛）排氣琯 返回 exhaust pipe