There is a tropical downpour here almost every day of the year. 这里全年几乎每天都会降下热带暴雨

11. On reaching mountains, the moisture is forced upwards
    途经山脉的时候 水气被迫抬升
12. and as it cools, it condenses into cloud and finally rain -
    逐渐冷却 汇聚成云 最后形成降雨
13. the source of all fresh water.
    这便是所有淡水的来源
14. There is a tropical downpour here almost every day of the year.
    这里全年几乎每天都会降下热带暴雨
15. Fresh water's journey starts here, high in the mountains.
    淡水之旅就是从这些高山之巅开始的
16. Growing from humble streams to mighty rivers
    涓涓细流汇集成泱泱大河
17. it will travel hundreds of miles to the sea.
    行程数百英里回到大海

来自《行星地球 第一季 第三集 Planet Earth S01E03 淡水》第 14 行