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並前往https://www.washingtonpost.com/news/speaking-of-science/wp/2017/02/24/think-you-know-how-many-days-are-in-a-year-think-again/

Think you know how many days are in a year? Think again.

This year is 365 days, 6 hours, 9 minutes and 9 seconds, or about 365.26 days long. Since this is the measurement most useful to astronomers, it ...

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