Unverified85% confidenceDecision RuleTime unknown
牵引绳有效长度建议在1.5-2.5米之间：短于1.5米孩子活动受限易产生抗拒，长于2.5米在人群密集区（地铁、机场）失去防走失意义，反而增加绊倒他人风险
1
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85%
Confidence
Long-term
Relevance
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