traffic exhaust emission

• 机动车排放

traffic exhaust emission的用法和样例：

例句

1. This article introduces briefly the motor vehicle emission control in Bangkok,Thailand.
   本文对泰国尤其是曼谷的机动车排放控制管理做了简要介绍。
2. Vehicle emission has become the major sources of air pollutants in the large cities.
   大城市中机动车排放已成为主要大气污染源。