Unverified85% confidenceTradeoffTime unknown
中弧设计（非高弧/低弧）属于通用性最强但挑战性中等的弧度，追求高难度平衡训练的大龄儿童或成人可能觉得刺激不足，而2岁以下幼儿独立站立使用仍有一定翻倒风险
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85%
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Long-term
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