地球的力量 第2集 大氣(12)撒哈拉沙漠

When the wind kicks up in the Sahara desert,

當(dāng)風(fēng)吹過(guò)撒哈拉大沙漠的時(shí)候

huge volumes of dust, rich in minerals,

蘊(yùn)含豐富營(yíng)養(yǎng)物質(zhì)和礦物質(zhì)的砂粒和粉塵

are lifted into the air to be blown out across the Atlantic.

被揚(yáng)到空氣中并被吹過(guò)大西洋

Here, much of it falls into the sea.

大部分都落進(jìn)了海洋

But some is carried on the wind all the way across the Atlantic

但還有一些被風(fēng)帶到了大西洋的彼岸

to the Amazon rainforest of South America.

到了南美的亞馬遜雨林

In fact, a staggering 40 million tons of dust

實(shí)際上，每年都有4億噸粉塵

is transported from the Sahara to the Amazon every year.

被風(fēng)從撒哈拉大沙漠帶到亞馬遜雨林

Here, the rain washes it out of the atmosphere

在這，雨水把大氣中的

and onto the forests below,

粉塵沖刷到雨林中

where it's a vital source of minerals that keep the rainforest healthy.

這是維持雨林正常生長(zhǎng)的重要的營(yíng)養(yǎng)源

In this way, the constantly swirling atmosphere

通過(guò)這種方式，不斷翻卷的大氣層

plays a critical role in the cycle of life on Earth.

對(duì)地球上生命的循環(huán)起著重要的作用

It creates the weather.

它創(chuàng)造了氣候

At the heart of all weather is heat.

任何氣候的核心都是熱量

This is three months of weather packed into just a few seconds.

這是在幾秒里顯示了三個(gè)月的天氣狀況

The clouds are generated by moisture from the oceans and the land.

云是由從海洋和大陸上蒸發(fā)的水分產(chǎn)生的