有關HaveyouheardaboutLea的精選知識
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HaveyouheardaboutLeapyear?Leapyearisayearthathas366days...
問題詳情:HaveyouheardaboutLeapyear?Leapyearisayearthathas366daysinsteadoftheusual365.Itnormallyoccurseveryfouryears,alwaysonaneven-numberedyear.Theextradayisaddedtoourshortestmonth.Thatisthesecondmonth...