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课程 4
Energy: types and conversions
📖 课程
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🎯 测验——选择翻译
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✅ 本课已完成
Energy is not created or destroyed — it converts. The sun heats water → steam spins a turbine → that becomes electricity in your socket.
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太阳能
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风能
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水能
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热能
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电能
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化学能