那是因为入冬时气温骤然下降，锁住了水底腐殖质散发上来的气泡。世界上只有几个湖有这样的景观，贝加尔湖也是一个。

来源: snowandlotus 于 2024-05-18 15:28:30 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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