Unverified75% confidenceCautionTime unknown
如果只是偶尔出差且住有WiFi的酒店，不必单独买硬件白噪音机，手机白噪音App+便携小音箱即可覆盖；专用机适合频繁出行或对声音品质敏感者
1
Sources
75%
Confidence
Medium-term (~90 days)
Relevance
-
First Seen
Sources
Related Entities
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