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jan 1, 251 BC - 秦国修建都江堰

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#-256~-251

{by李冰父子}
体现了国家对水利工程的重视

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人教版高中历史|Chinese students' PEP SENIOR HIGH HISTORY TEXTBOOKS

8 months ago

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jan 1, 251 BC

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~ 2277 years ago

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