Today, river discharges are increasingly controlled by human intervention, creating a need for international river-basin agreements.
如今河流排放越来越受到人为干预管束，需要出台国际河流流域的协定。
2
When this inland sea retreated, Hamilton hypothesizes, the Amazon dolphins remained in the riverbasin, evolving into striking creatures.
哈密尔顿推测，当这片内陆海退去，亚马逊河豚在流域留了下来，逐渐进化为一种恐怖动物。
3
The giant freshwater Mekong River stingray is just one of many mega fish species that could be threatened by dam-building plans in the Mekong RiverBasin.