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我想把一段音乐加在POWERPOINT上做PRESENTATION，有哪位大侠知道如何在电脑里把一段音乐剪短点，我的音乐有2分钟，可是我只需要30秒。多谢了
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Last Updated: 2001-10-23
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我想把一段音乐加在POWERPOINT上做PRESENTATION，有哪位大侠知道如何在电脑里把一段音乐剪短点，我的音乐有2分钟，可是我只需要30秒。多谢了
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