除此之外，我们还有一个很大的功能部门—环境安全部门，主要是针对一些柴油车、内燃车的发动机提供方案，改进其尾气排放的质量，通过解决尾气排放问题来保护我们的环境。

Last but not least, we have environmental safety department, mainly focusing on diesel engines of vehicles, to improve the quality of the exhaust emissions to help protect our environment.

youdao

除此之外，我们还有一个很大的功能部门—环境安全部门，主要是针对一些柴油车、内燃车的发动机提供方案，改进其尾气排放的质量，通过解决尾气排放问题来保护我们的环境。

Last but not least, we have environmental safety department, mainly focusing on diesel engines of vehicles, to improve the quality of the exhaust emissions to help protect our environment.

youdao