Unverified85% confidenceDecision RuleTime unknown
底部有防脱扣带或环绕式抽绳的设计比单纯松紧口固定更牢，无底部固定的背包罩在大风或快走时易被掀翻
1
Sources
85%
Confidence
Long-term
Relevance
-
First Seen
Sources
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