地球的力量

Greenland is an island covered by the second largest ice sheet on the planet.
格陵兰拥有世界上第二大的冰原
On the west coast is the massiveJakobshavn Glacier.
宏伟的雅各布冰河便处在它的西海岸
It's become the front line in scientists' attempts to understand
这里已经成为科学家了解

what's happening to the world's ice today.
全球变暖现象对世界冰层的影响的前沿阵地
Until as recently as 1997, the glacier was relatively stable.
直到1997年冰河都是稳定的
But since then, it's changed dramatically.
然而自此之后冰河变成变化剧烈
In the last five years, it's retreated over six miles.
过去5年冰河缩短了十公里那么多
It might seem strange, but the reason the glacier's retreated so much
但是它缩短的原因
is because it's started flowing faster.
是因为冰河的流速加快
The Jakobshavn Glacier is now moving at over 130 feet a day,
现在它一天流动四十米
the fastest in the world.
成为世界上
The faster it flows, the thinner it becomes.
流动得最快也最薄的冰川
This weakens the ice, causing it to break up.
这使得冰川断裂了
The result, the fjord is jam-packed with ice
结果，峡湾全是拥挤的冰块
that has broken off the front of the glacier and is drifting off to sea.
碎裂的冰山漂洋过海
重点讲解

1、cover
遮盖;掩蔽
Cover the casserole with a tight-fitting lid.
用大小合适的盖子盖住砂锅。
He whimpered and covered his face.
他掩面抽泣。
盖在…上面;铺在…上面
His finger went up to touch the black patch which covered his left eye.
他伸手去触摸遮住左眼的黑眼罩。
His head was covered with a khaki turban.
他头上包着卡其布的穆斯林头巾。
盖;覆盖;遮住
The clouds had spread and nearly covered the entire sky.
云彩扩散开来，几乎遮住了整个天空。
Two oil slicks are covering a total area of seven square miles.
两层浮油漂浮在7平方英里的区域上。
2、dramatically
突如其来的;急剧的;引人注目的
A fifth year of drought is expected to have dramatic effects on the California economy.
第五年遭受旱灾预计会对加利福尼亚的经济产生巨大的影响。
This policy has led to a dramatic increase in our prison populations.
这项政策已经让我们监狱的囚犯人数激增。
激动人心的;引人注目的;令人印象深刻的
He witnessed many dramatic escapes as people jumped from as high as the fourth floor.
他目睹了许多人从五层高的楼上跳下来逃生的惊险场面。
Their arrival was dramatic and exciting.
他们的到来令人激动不已，难以忘怀。
戏剧的;有关戏剧的;戏剧学的
a dramatic arts major in college.
大学里戏剧艺术专业的学生
I had no thoughts of making a dramatic film. I was working in documentary.
我没想过要拍一部剧情片，我正在拍一部纪录片。