[KongchangAI]
Unverified80% confidenceTradeoffTime unknown

余水回流设计(未喝完的水按反向键可吸回瓶内)比直接倒掉更省水,长途外出可减少约30%水量浪费,但结构复杂清洁难度上升

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80%
Confidence
Long-term
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