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This procedure can control the sound and animation button start and stop operation.
本程序可以通过按钮控制声音和动画的开始和停止操作。
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Since the start button to stop by the control, easy to operate.
自起动至停止均由按扭控制，操作方便。
youdao
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Since the start button to stop by the control, easy to operate.
自起动至停止均由按扭控制，操作方便。
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