有关昨天街上发生的交通事故，警察调查了目击者。

Police called the eyewitness about the traffic accident which happened in the street yesterday.

youdao

警察调查这次交通事故。

The police looked into the traffic accident.

youdao

警方正在对这起交通事故进行调查。

The police are making (carrying out) investigation into this accident.

youdao

警方正在对这起交通事故进行调查。

The police are making (carrying out) investigation into this accident.

youdao