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粵拼zi2)係唐字大數,通常係指1024(中數記法),亦可以指109(下數記法)或者10128(上數記法)。皆因數值已經好大,日常生活基本上都唔會用佢嚟記數,就算需要記,通常直接用科學記數法去記。

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