Unverified50% confidenceDecision RuleTime unknown
3-4岁幼儿选20-48片大块拼图，单片尺寸≥5cm防误吞；5-6岁适合60-100片；7岁以上可挑战300片以上
0
Sources
50%
Confidence
Long-term
Relevance
-
First Seen
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