看历史要尽量全面。BBC一个节目，英国工业化初期，一个山谷，有煤矿有铁矿，直接挖矿炼铁，煤烟充满山谷。工人平均寿命18岁

来源: easycity 于 2023-07-27 22:16:29 [旧帖] [给我悄悄话] 本文已被阅读：次

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