Rapping could be described as speaking or singing words at a fast speed over music with quick beats.

VOA: special.2009.10.14

The beat will do--control--that, so it's the pace or speed of the beat.

节拍才是根本,所以速度指节拍的快慢

耶鲁公开课 - 聆听音乐课程节选

It's the pace or speed of the-- Piece.

是什么的进行速度呢,一段乐曲

耶鲁公开课 - 聆听音乐课程节选

Some examples are activities like walking at an increased speed, dancing,swimming or riding a bicycle.

VOA: special.2010.06.08

And the relationship that he put forth is that the momentum is equal to Planck's constant times nu divided by the speed of light, or it's often more useful for us to think about it in terms of wavelength.

爱因斯坦提出的关系式是,动量等于普朗克常数,乘以υ除以光速，或者用波长来表示,通常更容易让我们想明白。

麻省理工公开课 - 化学原理课程节选

Another popular form of exercise is jogging,or running at a slow to medium speed.

VOA: special.2010.06.08

Even though a hard drive spins at 7200 times per minute or even faster, that's relatively slower than the speed of light.

即使一个硬盘驱动器的转速达到每分钟7200次,甚至更快，仍然比光速慢。

哈佛公开课 - 计算机科学课程节选

And, you know acceleration means either change of speed or change of direction.

你知道加速度意味着,不是改变速度就是改变方向。

麻省理工公开课 - 固态化学导论课程节选

The pace or the speed of the piece?

一段乐曲的行进的步调或速度

耶鲁公开课 - 聆听音乐课程节选