[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

3岁以下幼儿应选颗粒直径≥1mm的粗砂或彩泥替代品,细砂(0.2-0.5mm)易被吸入呛咳,且粗砂更适合小肌肉尚未发育完全的抓握操作

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85%
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Long-term
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