The Aswan Dam helps to control the River Nile in Egypt.
阿
旺水坝有助于
制埃及的尼罗
。
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件
And the reason that we're in here is because around 1,000 years ago a mathematician named Al-Hassan Ibn al-Haytham made a promise to the ruler of Egypt that he'd build a dam across the Nile River to stop its catastrophic floods.
我们在这里的原因是因为大约 1000 年前,一位名叫阿尔·哈森·伊本·阿尔·海瑟姆的数学家向埃及国王承
他将在
罗河上修建一座大坝来阻止灾难性的洪水。