Unverified85% confidenceDecision RuleTime unknown
1-3岁幼儿选球体直径18-25cm,握持感好且不易砸伤;3-6岁可选30-40cm大球用于抛接协调训练;直径>50cm的健身球不适合3岁以下独立玩耍
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85%
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Long-term
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