Unverified85% confidenceDecision RuleTime unknown
牵引绳有效长度应≥1.5米，过短（＜1米）会限制孩子自主探索，导致孩子频繁被拽而抵触，家长也需弯腰跟随；1.5-2米是平衡安全监护与活动自由的黄金区间
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