Last Updated：2025/11/22
The self-educated engineer designed a solar-powered water pump that transformed the rural community.
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The self-educated engineer designed a solar-powered water pump that transformed the rural community.
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独学で学んだ技術者は、地方のコミュニティの暮らしを一変させた太陽光駆動の給水ポンプを設計した。
