building in power, 随着力道的积聚

22. it's blown away as a fine mist.
    便已被吹散成雾霾
23. In their upper reaches, mountain streams are full of energy.
    上游地段的山涧充满活力
24. Streams join to form rivers,
    溪流汇聚成河
25. building in power,
    随着力道的积聚
26. creating rapids.
    形成激流
27. The water here is cold.
    这里的水较冷
28. Low in nutrients, but high in oxygen.
    营养物质不多 但含氧量却很高

来自《行星地球 第一季 第三集 Planet Earth S01E03 淡水》第 25 行