Unverified83% confidenceCautionTime unknown
不要为免取电脑功能牺牲全部背负性：若每天步行通勤超20分钟或需背负超6kg，纯平摊包无承重腰带和透气背板会导致腰背疲劳，此类人群应选可折叠承重结构的混合款
1
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83%
Confidence
Long-term
Relevance
-
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