Unverified80% confidenceDecision RuleTime unknown
杯口内径是清洁便利性的关键指标：内径≥5cm可让成人手掌伸入擦洗，窄口杯（<4cm）必须依赖专用瓶刷，长期使用杯底易积垢
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80%
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Long-term
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Unverified杯口内径≥5cm的宽口杯身可整只手伸入擦洗内壁，窄口杯（＜4cm）长期使用底部易残留茶垢奶垢，必须用杯刷才能清洁到位90% similarUnverified杯口内径≥5cm（大口设计）才方便手伸进去或用普通瓶刷彻底清洗底部，小口窄颈杯长期只能倒水冲洗，容易在底部积累茶垢水垢90% similarUnverified杯盖可完全拆解、杯口内径≥5cm的宽口设计清洁便利性最佳，手能伸入擦洗，窄口深杯需专用刷且死角易积垢发霉89% similarUnverified杯口内径小于4cm的窄口保温杯，手伸不进去、普通杯刷难到底，长期易残留茶渍奶垢，选口径≥5cm的宽口款更易清洁87% similarUnverified检查瓶口内径是否≥4.5cm，宽口设计成人手能伸入擦洗内壁，窄口壶只能靠瓶刷难以彻底清洁底部积垢86% similar
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