他们是如何让这么短的日历与尼罗河的实际洪水期保持同步的呢？

How did they keep this short calendar in step with the actual flooding of the Nile?

youdao

他们是如何让这么短的日历与尼罗河的实际洪水期保持同步的呢？

How did they keep this short calendar in step with the actual flooding of the Nile?

youdao