their fresh water has brought life and abundance to planet Earth. 淡水为地球带来了无数生机与富饶
to rest and refuel on their long migratory journeys. 并在此休整 准备继续长途迁徙
they slow down, release their sediment and build deltas. 水流减缓 留下大量泥沙 堆成了三角洲
rivers broaden and flow wearily across their flat flood plains. 河道变宽 河水缓缓流过 平坦辽阔的冲积平原
are only found in the lower courses of their rivers. 都是位于河流的下游地段
and flaunt them to their attending females. 然后向自己的“心上人”炫耀
To date over 3,000 species of their fish have been described - 据统计 被命名的鱼类已达到3000多种
but continue their journey to the sea. 而是一直奔向大海