And the bigger lesson from that is that entropy, unlike energy u or enthalpy H, we could define an absolutely number for it.

热力学第三定律的一个更重要的推论是,与内能和自由焓不同，我们可以给上定义一个绝对的数值。

麻省理工公开课 - 热力学与动力学课程节选

Alright, next thing I want to do is to define the vector that plays the role of the number 0.

接下来我想做的是定义一个矢量,它相当于数字0

耶鲁公开课 - 基础物理课程节选

That's a complicated thing that accountants figure out and accountants find it difficult to define the earnings of a company, but they do something and they come up with a number.

会计们会计算这个复杂的问题,他们还会发现公司收益很难定义,但是他们会想办法,得出一个数字

耶鲁公开课 - 金融市场课程节选

Security features on Windows Phone 8 include secure boot, which ensures the phone only runs authentic software and passwords with the ability to pre-define the number of failed password attempts.

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The benefits of event marketing are harder to define than the number of cars sold.

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Other factors include migration and the increase in the number of those who define themselves as not having any religion.

BBC: Northern Ireland