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自然數 来自维基百科,自由的百科全书
1000是999与1001之间的自然数,十进制表示的第一个四位数,中文书写“一千”。
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Seamless Wikipedia browsing. On steroids.
Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.
Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.