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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这意味着，一个人要得到正确的答案必须有意识的去计算这个几率，但只有少数人能够得出精确的答案。

This meant a person had to consciously compute the percentages to get a right answer—something few people could do accurately.

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它也涉及到精确度的关注，保证生产成果总是按正确的质量要求来交付。

It is also associated with a focus on accuracy, ensuring that work outputs are always delivered to the right quality.

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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