And meanwhile, the fast and smooth flow of traffic reduces the air pollution caused by engine-idling.

同时，快速而又流畅的车辆还会减少由发动机怠速导致的空气污染。

youdao

And meanwhile, the fast and smooth flow of traffic reduces the air pollution caused by engine-idling.

同时，快速而又流畅的车辆还会减少由发动机变速导致的空气污染。

youdao

Almost all the traffic police were on the roads of Changsha for maintaining the smooth flow of traffic and people's safety.

今晚，长沙交警几乎全部走上闹市街头的岗位，全力维护道路的畅通和行人的安全。

youdao

In theory, drivers will then adjust their departure times and smooth out the flow of traffic through the day.

ECONOMIST: Road-pricing in California

Other transport projects anticipated this year include work on a new Isle of Dogs Crossrail station, "intensification" of the work to extend the East London Line and a host of initiatives to help smooth traffic flow.

BBC: TfL budget heralds major works