npub1cl…stkrs on Nostr: ...
Published at
2023-06-20 06:29:56Event JSON
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"content": "ナイル川沿いに作られた古代の構造物が「川の流れを制御する世界最古のシステム」だったことが判明\n\u003c#gigazine\u003e \n\nhttps://gigazine.net/news/20230620-river-nile-walls-hydraulic-engineering/",
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