一旦被人所知，它就迅速传播开来，替代了水钟，但却没有替代日晷，日晷被用来将新机器与原来的计时方法进行对照检查。

Once known, it spread rapidly, driving out water clocks but not solar dials, which were needed to check the new machines against the timekeeper of last resort.

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他们还希望最高法院的裁决将遏制专利法，专利法越来越多地被用来将新的生命形式划为私有财产。

They are also hoping the court's ruling will rein in patent law, which is increasingly being used to claim new life forms as private property.

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它们还可以用来将结果集返回给调用程序。

They can also be used to return result sets to the calling program.

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RAM is this memory recall or, as you'll soon find in problems Set One, that's used for ephemeral purposes.

内存是随机存储器，你们将,在习题集1中发现，它们用来短暂存储的目的。

哈佛公开课 - 计算机科学课程节选

And I have purposely made the arrow shorter to indicate that it has been slowed because we are going to argue its mass didn't change, so the only way to change its energy is to change its velocity.

我已经故意将这个箭头弄短,用来象征它变慢了,因为我们将证明它的质量没有变，只有它的能量改变了,也就是它的速度变了。

麻省理工公开课 - 固态化学导论课程节选

And what it's used is to convert one type of group, what's called a carboxylic acid into another type of very reactive intermediate, which is called an acid chloride.

它被用来将一类被称作羧酸的化合物，转化成另外一类活性很高的反应中间体,也就是酰氯。

麻省理工公开课 - 化学原理课程节选