Unverified75% confidenceDecision RuleTime unknown
单肩包若需长时间背负，肩带宽度应≥3cm且带软垫，细链条/细带在负重超2kg时会勒肩造成疼痛，通勤重物需求应选宽肩带或斜挎/背包
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75%
Confidence
Long-term
Relevance
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