各种效应已经被研究人员进行了测试，如一年当中每月的效应，节日效应和一周效应。
Various effects have been tested by researcher such as Month of the year effect, holiday effect and day-of-the-week effect.
各种效应已经被研究人员进行了测试，如一年当中每月的效应，节日效应和一周效应。
Various effects have been tested by researcher such as Month of the year effect, holiday effect and day-of-the-week effect.
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