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並前往https://www.southcarolinapublicradio.org/sc-news/2020-03-12/pi-day-celebrates-a-number-we-couldnt-live-without

Pi Day Celebrates a Number We Couldn't Live Without

Saturday, March 14 is Pi Day, a day to celebrate that unique number represented by the Greek letter pi. It's about 3.14 (hence its ...

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