劳工节对很多美国人来说都是一个很受欢迎的节日，全家人可以在海滩或者室外烤肉炉旁渡过三天愉快的周末时光，庆祝夏日的结束。
Many Americans view Labor Day as a welcome end-of-summer three-day weekend to spend at the beach or the barbecue pit.
“对于大多数美国人来说，劳工节意味着为期三天的周末，但对9.1%的美国人来说，那就意味着为期12个月的周末。”-杰·雷诺。
"For most Americans, Labor day means a 3-day weekend, but for 9.1 percent of Americans, it's been a 12-month weekend." -jay leno.
正如所编写的，这个函数能用来计算周末，新年，纪念日，美国国庆日，劳工节，感恩节，以及圣诞节这些非商业的日期。
As written, the function counts weekends, New Year 's day, memorial day, the fourth of July, labor day, Thanksgiving, and Christmas as non - business days.
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