The researchers said tPA improved the chances of a successful result by thirty-one percent and produced no change in the death rate.

VOA: special.2009.09.22

So the whole piece,then,would be a piece involving irregular rate of change-- the entire piece.

所以整首歌曲中和声都有不规则的改变-,整首歌曲都是。

耶鲁公开课 - 聆听音乐课程节选

Do we have a regular or irregular rate of change here?

这里的变化率是规则还是不规则的？

耶鲁公开课 - 聆听音乐课程节选

The rate and pace of change in the industry is such that it's always kind of a jump ball environment where companies are not able to hang on to a great position for a super long time.

这一行变化的速度,就是这样,总处于一种跳球环境中,公司不能,永远处于不败之地。

斯坦福公开课 - 戴尔CEO-Michael.Dell谈创业和发展课程节选