[KongchangAI]
Unverified88% confidenceDecision RuleTime unknown

重量控制在3kg以内适合6岁以下,4-5kg适合7-9岁;手风琴需站立或坐姿背在身前演奏,过重会导致孩子含胸驼背并快速疲劳放弃练习

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88%
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Long-term
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