Sarah was looking out the window and giving us a running commentary on what was happening in the street.萨拉一边看着窗外，一边不断地告诉我们街上正在发生的事情。She kept up a running commentary on the festivities.她对庆祝活动进行了连续报道。He kept up a running commentary on my attempt to get the machine going.他对我试图把那辆机器开动不断地发表意见。