科研之友
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<正>牛顿是世界著名物理学家和数学家,被称为"近代物理学之父"。他的早年生活并非一帆风顺。Isaac Newton is one of the most famous scientists of all time,and he discovered some amazing things.He was born in Woolsthorpe,England on 4 January 1643.But in those days the calendar was different to what it is now,and if you used that calendar then he was actually born on Christmas Day!
