Pi Day
摘要：
Pi DayMarch 14, written 3-14 in the USA date format, is an unofficial celebration for Pi Day derived from the common three-digit approximation for the number π: 3.14. It is usually celebrated at ... 阅读全文
posted @ 2005-07-11 23:33 Juvarsenal Clue 阅读(611) 评论(0) 推荐(0) 编辑
