听力文本

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
Growing from humble streams to mighty rivers, it will travel hundreds of miles to the sea.
涓涓细流汇集成泱泱大河，行程数百英里回到大海
Angel Falls, the highest waterfall in the world.
安赫尔瀑布——世界上落差最大的瀑布
Its waters drop unbroken for almost 1 ,000 metres.
流水不间断地从将近1000米的高处落下

Such is the height of these falls,
具有如此这般高度的瀑布
that long before the water reaches the base in the Devil's Canyon, it's blown away as a fine mist.
在水还未落到恶魔谷底之前，便已被吹散成雾霾
In their upper reaches, mountain streams are full of energy.
上游地段的山涧充满活力
Streams join to form rivers, building in power, creating rapids.
溪流汇聚成河，随着力道的积聚形成激流
The water here is cold, low in nutrients but high in oxygen.
这里的水较冷，营养物质不多，但含氧量却很高
The few creatures that live in the torrent have to hang on for dear life.
生活在急流中的少数几种动物，得有办法固定自己以保住性命。

词汇解析

1.the height of …的高度
His explosive power and jumping ability are amazing. Everytime he dunks, his eyes have already reached the height of the ring.
他的爆发力和弹跳力让人惊艳，每当他扣篮的时候，他的眼睛就已经达到了篮圈的高度。

2.blow away 吹走；驱散
High-mass stars form in dense regions of gas, and later in life expel strong stellar winds that blow away the surrounding material.
大量的星星存在于稠密的气体中间，在接下来的日子中，强有力的恒星风将会将其周围的物体吹走。

3.low in 缺乏
Like many other Japanese foods, sushi tends to be low in fat, cholesterol, and calories.
像许多其他日本食物，寿司是倾向于低脂肪、低胆固醇和低卡路里的。

视频及简介

淡水是我们最宝贵的资源，它决定了地球上生命的分布。同河流一起，从高高的山峰一路而降，直向大海，观看壮观的瀑布，在大峡谷里飞翔，在世界上最深的湖泊的冰雪下面探索野生的生命，见证动物行为的独特的、生动的一面：水獭和泽鳄将一决胜负。