[KongchangAI]
Unverified90% confidenceDecision RuleTime unknown

跳绳长度选择公式:孩子单脚踩住绳子中间,手柄拉到胸口至肚脐之间为合适;快速估算为身高×0.9,如身高120cm选约108-120cm可调节款

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90%
Confidence
Long-term
Relevance
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get_claim(id=287212)