Unverified80% confidenceTradeoffTime unknown
保温性能与重量、便携性存在权衡：真空层越厚、保温越久的罐子壁越厚越重，600ml高保温款空罐常达400-600g，装满后接近1kg，通勤党若步行/骑车距离长应在保温时长和重量间取舍
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80%
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