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简谱学习第五课：强弱拍 小节线 小节 终止线 拍号，内容多但简单
简谱学习第五课：强弱拍 小节线 小节 终止线 拍号，内容多但简单
王大叔音乐简谱学习30课全集 零基础学简谱 通俗易懂 老少皆宜 5/29
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