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世界文化 · 每天一个冷知识
一周为什么偏偏是7天？
一句英文 · 一句中文 · 学英语顺便涨知识
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Long ago, people watched the sky at night.很久以前，古人喜欢抬头看天。
They saw the Sun, the Moon and five planets.他们看见太阳、月亮，还有五颗行星。
That makes seven "wandering stars".加起来，正好七个天上的流浪星。
These seven bodies felt very special to them.这七位天上的大佬，古人觉得特别稀罕。
So they made one week seven days long.于是他们把一周，定为七天。
The days were named after these seven stars.一周七天，也用这七位来命名。
Seven days a week has lasted thousands of years.七天一周，就这么用了几千年。
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