听力文本

The winds generated out at sea, sweep inland across the continents.
风在外海形成，侵入大陆席卷内陆地区
As they travel across the Sahara, they create the biggest of all sand storms
它们穿越撒哈拉沙漠时，造成了世界上最大的沙尘暴
blowing sand halfway round the world to fertilize the Amazon jungle.
沙子被吹到地球的另一头，亚马逊丛林因此而变得肥沃
Winds blowing across the Indian Ocean
风掠过整个印度洋
collect moisture and sweep northwards towards the Himalayas.
一边收集水气，一边扑向北方的喜玛拉雅山脉

As the air rises, so it cools.
随着气流的上升，温度也逐渐下降
The water it carries condenses into clouds
携带的水气开始凝结，汇集成云
and then falls as the life giving rains of the monsoon.
然后变成季风雨落到地面，滋润大地万物
So air currents powered by the sun, carry wet air to the middle of continents.
至此，由太阳驱动的大气环流，将潮湿空气带到了大陆中部。

词汇解析

1.sweep across 席卷
New York City has a new policy that I hope will sweep across the country.
纽约市颁布了一个新的政策，我希望这个政策将席卷全国。

2.blow across 吹过
The moon shine brightly, the breeze blow across the bottom of gorge slightly.
皓月当空，微风轻轻吹过谷底。

3.carry into 把...带入
Passengers will have to drink bottled water and other beverages they carry into the subway if security machines and police dogs could not identify them.
乘客随身携带的瓶装水等饮料，若无法被识别，需当场饮用后才可通过。

视频及简介

北极的春季，北极熊妈妈和它的孩子从它们的洞穴中走出来，它们只有短短的两周时间，它们要在冰雪融化前穿越冰冻的大海，它们进退两难。在这集中，我们将看到一些最难得的、完整的北极熊生活的画面。