[KongchangAI]
Unverified90% confidenceDecision RuleTime unknown

语言启蒙玩具最大音量应≤85分贝(近耳测量),且必须带音量分级或静音档;无音量调节的发声玩具不建议购买,长期近距离高音量会损伤婴幼儿听力

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90%
Confidence
Long-term
Relevance
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get_claim(id=270687)