No witnesses to the accident have come forward yet, despite the police appeal.不管警方怎么呼吁,仍然没有事故的目击者站出来作证。Police have appealed for witnesses to the accident.警方呼吁事故的目击者提供帮助。One witness to the accident said the driver appeared to be drunk.事故的一名目击者说司机似乎喝醉了。After several telephone calls, detectives traced two witnesses to the accident.打了几个电话后,侦探们找到了事故的两个目击者。