Davida Herzl, Aclima's boss, says they have revealed pollution highs on days when San Francisco's transit workers went on strike and the city's inhabitants were forced to use their cars.

Aclima的老板达维达·赫茨尔（DavidaHerzl）表示，他们发现，旧金山的运输工人罢工、居民被迫使用汽车的那几天，空气污染达到了顶峰。