[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

初中生书包容量建议选25-30L,主仓需能平放A4/16开教辅书本(内长≥33cm),若学校课业重、需带全套教材,可选30-35L但空重应控制在1kg以内避免加重负担

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