对贫困的精确定义实际上是很难的。
A precise definition of poverty is actually very difficult to determine.
注意到它传达了令人印象深刻的精确定义的信息。
Note that it conveys an impressive amount of precisely defined information.
安全的精确定义是什么?
And the temperature scale that turns out to be well-defined and ends up giving us the concept of an absolute zero is the ideal gas thermometer.
比如理想气体温标,它有精确的定义,并能引出绝对零度的概念,今天我们就先来谈谈它。
Our temperature probably fluctuates during the day a little bit anyways, it's not very accurate. And similarly, the boiling point, defining that at a 100 degrees Celsius well that depends on the pressure.
这就不太精确,我们的体温一天之中,会有高低的变化,这一定义不够精确,类似的,我们把水的沸点定义为。
We can't define it as an exact radius in terms of the definition we might think of classically.
我们不能给它定义一个精确的半径,按照经典的图像来。
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