地球的力量

Without cold water sinking at the poles, the ocean conveyor would collapse.
没有南北两极冷水下沉大洋输送带就会崩溃
You only fully appreciate just how important the ocean conveyor
你只是刚刚完全明白大洋输送带的重要性
is to life on Earth when it goes wrong.
如果它出错了地球上的生命会有何遭遇

Many believe this happened and it helped cause the death
它曾发生过，导致了地球上
of almost every living thing on the planet.
几乎所有生物体的死亡
This catastrophe happened 250 million years ago
这次灾难发生在2亿5千万年前
and these were the creatures in the firing line.
这些就是在前线的生物
They weren't dinosaurs.
它们不是恐龙
This was an age well before dinosaurs walked the Earth.
这是恐龙出现在地球上之前的年代
It was a time of increasing global warming.
这是温室效应不断增强的时代
Rising temperatures made life hard, but things were about to get much worse.
温度升高导致生活艰难但是一切会变得更糟糕
As global temperatures continued to rise,
随着地球温度不断升高
the oceans warmed up so much that the cold water at the poles could no longer sink.
海洋温度也升高 两极的冷水无法再下沉
The crucial link in the ocean conveyor had been broken.
大洋输送带这个关键联系被打破了
So the ocean currents stopped moving and the sea became a graveyard.
所以海洋洋流停止运动大海变成了坟墓

重点讲解

1、appreciate
欣赏；鉴赏；赏识
Anyone can appreciate our music.
任何人都能欣赏我们的音乐。
In time you'll appreciate the beauty and subtlety of this language.
总有一天你会体会到这门语言的优美和微妙之处。
领会；了解；认识
She never really appreciated the depth and bitterness of the Irish conflict.
她从来没有真正认识到爱尔兰矛盾的深刻和激烈。
He appreciates that co-operation with the media is part of his professional duties.
他懂得与媒体合作是自己工作职责的一部分。
感谢;感激
Peter stood by me when I most needed it. I'll always appreciate that.
当我最需要的时候，彼得在我身边支持我。我将永存感激。
Thanks, lads. I appreciate it.
谢了，哥们儿。我很感激。
2、current
(河、湖或海的)水流，潮流
Under normal conditions, the ocean currents of the tropical Pacific travel from east to west.
在正常情况下，太平洋的热带洋流自东向西流。
The couple were swept away by the strong current.
这对夫妻被巨大的水流卷走了。
通用的;流通的;流行的
Current thinking suggests that toxins only have a small part to play in the build up of cellulite.
目前普遍认为，毒素对皮下脂肪团堆积影响不大。
This custom was still current in the late 1960s.
这种习俗在20世纪60年代末仍然很普遍。