exterior costs

• 外部成本

exterior costs的用法和样例：

例句

1. The activity of traffic gives advantage to the society, but at the same time it also brings some adverse effects, which produce the exterior cost of traffic.
   摘要交通活动给人们的生活提供了便利，同时也给自然环境和社会带来一定的负面影响，即产生了交通的外部成本。