Unverified85% confidenceTradeoffTime unknown
海绵耳塞NRR最高但需搓细后30秒内塞入并按压回弹，操作不当降噪骤降；硅胶预成型耳塞NRR约22-27但即戴即用，适合通勤和频繁摘戴
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85%
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