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