The water here is just too cold for the bacteria that normally decompose the dead. 由于湖水过于寒冷 分解尸体的细菌很难在此存活
but continue their journey to the sea. 而是一直奔向大海
The planet's indisputable super-river is the Amazon. 地球上的超级大河 毫无疑问就是亚马逊河
They are the key scavengers in this lake. 它们是湖里不可或缺的“清洁工”
including the world's only fresh water seal. 包括世界上唯一的淡水海豹
400 miles long and over a mile deep, Baikal contains one fifth of all the fresh water found in our planet's lakes and rivers. 贝加尔湖长400英里 深度超过1英里 其中淡水储量占到了全球江河湖泊淡水总量的1/5
For five months of the year it's sealed by an ice sheet over a metre thick. 每年中总有5个月 湖面被1米厚的冰层覆盖
Baikal is the oldest lake in the world 贝加尔湖是世界上最古老的湖泊
and, despite the harsh conditions, life flourishes here in isolation. 尽管生存条件恶劣 生命仍在这个与世隔绝的地方得到了兴盛
but it's dwarfed by the world's largest lake - 但它远比不上世界上最大的湖泊