[KongchangAI]
Unverified80% confidenceDecision RuleTime unknown

词汇覆盖量并非越多越好,单套超过500词反而稀释高频核心词,0-3岁优先选按主题分册的100-200词高频常用词卡,比大而全的千词卡更有效

1
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80%
Confidence
Long-term
Relevance
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