Three plus five. I can take something to a power, double star, just take three to the fifth power.

+5，我也可以,求一个数的次方，例如求3的5次方。

麻省理工公开课 - 计算机科学及编程导论课程节选

So let's take a look at what actually happens if we're talking about a carbon-carbon double bond, we're going to have a double bond.

让我们来看一看碳碳双键的情况,例如在乙烷里，我们有个双键。

麻省理工公开课 - 化学原理课程节选

How long does it take for the population of cells to double?

一组细胞的倍增时间是多久呢

耶鲁公开课 - 生物医学工程探索课程节选