Unverified78% confidenceDecision RuleTime unknown
变色滴的变色反应本质是遇尿液(含尿素/pH变化)触发的酸碱指示剂或色素稀释显色,选购时留意标注'遇水显色'还是'遇尿显色'——前者滴入马桶即变色无训练意义,后者才能真正配合如厕引导
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78%
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Long-term
Relevance
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