[KongchangAI]
Unverified82% confidenceDecision RuleTime unknown

游泳圈直径按体重而非年龄选:坐圈内径需卡住腋下不脱出,参考20kg以下选直径50-60cm,20-35kg选65-70cm;充气后过大(腋下能滑出)等于无效防护

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82%
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