Jason was very particular about this exhaust system.

杰森对于排气系统有一定的要求。

Old cars with old exhaust systems drove along uneven roads.

装有旧排气系统的旧车在崎岖的道路上行驶。

The goal is to improve air quality by making sure vehicles are properly maintained and not emitting pollutants that exhaust systems are designed to catch.

目标是通过确保车辆得到妥善维护并且不排放排气系统旨在捕获的污染物来改善空气质量。

Full engine power is ensured with a clean radiator, and the funnel-shaped revolving screening drum has an exhaust system to effectively clean the incoming air.

干净的散热器保证了发动机的全部动力，漏斗形旋转筛鼓具有排气系统， 可有效清洁进入的空气。