因为卫生保健专家和研究者需要精确的数据和统计来正确的理解和对待健康问题。

Health care professionals and medical researchers need accurate data and statistics in order to correctly understand and treat health problems.

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对于我们的示例，需要地形图、公路图和县地图以正确识别要跟踪的精确位置。

For our example, we'll need the topographical, highways, and county maps to accurately identify the precise location to track.

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但是你必须相信这个人工胰腺很可靠，能够精确地检测血糖水平并正确地注射胰岛素。

But you have to appreciate how exquisitely reliable an artificial pancreas would have to be to read glucose correctly and dispense insulin correctly.

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So that means that we don't have to worry about things like wave functions when we're talking about Lewis structures, but because they're so simple to use and because they so often predict the electron configuration of molecules accurately, we end up using them all the time in chemistry, so it's very valuable to know how to draw them correctly and to know how to work with them.

因此这也就意味着我们在讨论路易斯结构的时候,不需要担心波函数之类的东西，但是由于路易斯结构不仅简单易用,而且用它来预测分子的电子排布,经常可以得到非常精确的结果，结果我们在化学中一直都在用它，因此知道如何正确地画出并运用,路易斯结构是非常有价值的。

麻省理工公开课 - 化学原理课程节选