历史小径·世界史英语30篇（6）
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Batch 0005-019 Bronze Tools Transformed Farming and War
批次0005-019：青铜工具变革农耕与战争
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Bronze tools appeared when people learned to mix copper and tin.人们学会将铜与锡混合后，青铜工具便出现了。
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Farmers used bronze hoes and sickles to work land more efficiently.农民使用青铜锄和镰刀更高效地耕作土地。
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Stronger plows let them cultivate heavier soils and grow more food.更坚固的犁使他们得以开垦更厚重的土壤，收获更多粮食。
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Bronze swords and spearheads gave warriors clear advantages in battle.青铜剑和矛头使战士在战场上获得明显优势。
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Only elites controlled metal workshops, increasing their political power.只有精英阶层掌控金属作坊，从而增强了其政治权力。
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Trade for tin and copper linked distant mountains and river valleys.锡与铜的贸易将遥远的山区与河谷连接起来。
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Bronze age cities rose where metal, grain, and labor converged.青铜时代的城市兴起于金属、粮食与劳动力交汇之处。
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This new material changed how people lived, fought, and ruled forever.这种新材料永久性地改变了人们的生活、作战与统治方式。