黑烟从这辆旧车的排气管中冒出来。

Black smoke was coming out of the ___tailpipe of the old car.

机械师检查了汽车的排气管是否有损坏。

The mechanic inspected the car's ___tailpipe for any damage.

由于先进技术，现代车辆的排气管排放更清洁。

Modern vehicles have cleaner ___tailpipe emissions due to advanced technology.