Relative references can save you time when you're repeating the same type of calculation across multiple rows or columns.

在多行或者多列进行运算时，并且人运算的公式相似时，相对引用的使用可以节省你大量的时间。

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If a trader wishes to see a 50-day average instead, the same type of calculation would be made, but it would include the prices over the past 50 days.

如果交易员想查看过去50天的移动平均数，计算方法相同，但是要统计过去50天的价格。

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During the generation of markup or during the execution of an action, it is often necessary to access a slow backend or perform some type of time consuming calculation.

在标记生成期间或操作执行期间，经常有必要访问慢速后端或执行一些较为费时的计算。

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