exhaust guidance

例句：

1. 1. The exhaustguidance system is designed to improvethe efficiency of the engine.
   排气导向系统旨在提高发动机的效率。
2. 2. The exhaustguidance system helps to reduceemissions and protect the environment.
   排气导向系统有助于减少排放并保护环境。
3. 3.The exhaust guidance system was installed in thenew car to ensure smooth operation.
   新汽车安装了排气导向系统以确保顺畅运行。