Two billion people depend on them for drinking water...

二十亿人靠喝这些河中的水生存
And to irrigate their crops, as in Bangladesh.

人们还用这些河水灌溉例如孟加拉
On the delta of the Ganges and Brahmaputra,

在雅鲁藏布江和恒河三角洲地区
Bangladesh is directly affected by the phenomena...

孟加拉人会直接受到喜马拉雅山
Occurring in the Himalayas and at sea level.

雪峰减少和海平面上升问题的影响
This is one of the most populous and poorest countries in the world.

该国是世界上人口最多最穷的国家之一
It is already hit by global warming.

并且已经受到了全球气候变暖的影响
The combined impact of increasingly dramatic floods and hurricanes...

持续增加的洪水和飓风
Could make a third of its landmass disappear.

可能会使该国三分之一的陆地消失
When populations are subjected to these devastating phenomena,

当人们面临这种破坏性现象时
They eventually move away.

他们最终会迁离此地
Wealthy countries will not be spared.

富有的国家也不会逃过此劫