But blood drops with long tails can tell a great deal about the direction, speed and angle of the blood's starting point.

VOA: special.2010.05.05

Okay. So at that point the music begins to speed up with the accelerando.

嗯,从音乐的那一点开始,节奏随着渐速音加快

耶鲁公开课 - 聆听音乐课程节选

As they returned to the launch point at full speed following their outing, the RIB lurched, throwing Holly and her father out of the boat.

BBC: Holly Buchanan's remains found on Loch Lomond island

An accident investigator later examined the scene and estimated the speed at point of impact was between 30mph and 35mph which "must mean the approach speed would have been greater", said Mr Lamb.

BBC: Blackpool fatal crash driver 'used excessive speed'

Let me make a general point about high-speed rail as well as the way the infrastructure is being moved through the Recovery Act.

WHITEHOUSE: Creating New Jobs by Investing in High-Speed Rail