纪录片《地球劫难日》 第09期 火山冬天

Using the evidence from Laki, Courtillot now built a model of how the Siberian Traps might have destroyed the world.

利用拉基的证据，Courtillot建立了一个模型解释西伯利亚地盾如何摧毁整个世界。

First, there would have been eruptions² sending thousands of tons of dust and ashes into the sky.

首先火山喷发将数千吨的尘埃送上天空.

Slowly the sun would have been blocked out and temperatures would have fallen.

阳光渐渐被阻挡，气温不断下降。

First we'll enter a winter, a volcanic³ winter,

首先造成全球性的冬天：火山冬天，

the dust and the sulphur will cool the atmosphere after each eruption¹ for years or tens of years.

每次喷发产生的尘埃和硫磺都会使大气降温，它会持续几年甚至几十年。

It would have been like a nuclear winter lasting⁴ decades.

这类似于核冬天，延续数十年之久。

But that would have been just the beginning.

但这仅仅只是开始。

As the sky's cleared, vast quantities of gas given off by the burning lava⁵

随着天空逐渐晴朗，熔岩挥发出的大量气体，

would have slowly wrapped the earth in a blanket of carbon dioxide, an extremely powerful greenhouse gas.

慢慢包围了整个地球，形成一个二氧化碳罩，二氧化碳是相当强大的温室气体。

Gradually, over thousands of years there would have been massive global warming.

渐渐地，几千年后地球上又出现了全球大变暖的现象。

The carbon dioxide will lead to a greenhouse effect and the cold will be replaced by unusual hot time.

二氧化碳会造成温室效应，严寒再次被高温所取代。

So you get the double hit, you're cold for a while and then hot for a longer time.

所以地球遭受了双重打击，先是一阵严寒，然后再是长期的炎热。

So that altogether after a million years, the earth would be different.

这些因素共同作用的100万年后，地球肯定已是面目全非。

The climate would be different and a mass extinction⁶ would have happened.

气候剧变，这势必会造成生物大灭绝。

1 eruption   

n.火山爆发；（战争等）爆发；（疾病等）发作

参考例句：

• The temple was destroyed in the violent eruption of 1470 BC.庙宇在公元前1470年猛烈的火山爆发中摧毁了。
• The eruption of a volcano is spontaneous.火山的爆发是自发的。

2 eruptions   

n.喷发，爆发( eruption的名词复数 )

参考例句：

• There have been several volcanic eruptions this year. 今年火山爆发了好几次。 来自《简明英汉词典》
• Over 200 people have been killed by volcanic eruptions. 火山喷发已导致200多人丧生。 来自辞典例句

3 volcanic   

adj.火山的；象火山的；由火山引起的

参考例句：

• There have been several volcanic eruptions this year.今年火山爆发了好几次。
• Volcanic activity has created thermal springs and boiling mud pools.火山活动产生了温泉和沸腾的泥浆池。

4 lasting   

adj.永久的，永恒的；vbl.持续，维持

参考例句：

• The lasting war debased the value of the dollar.持久的战争使美元贬值。
• We hope for a lasting settlement of all these troubles.我们希望这些纠纷能获得永久的解决。

5 lava   

n.熔岩，火山岩

参考例句：

• The lava flowed down the sides of the volcano.熔岩沿火山坡面涌流而下。
• His anger spilled out like lava.他的愤怒像火山爆发似的迸发出来。

6 extinction   

n.熄灭，消亡，消灭，灭绝，绝种

参考例句：

• The plant is now in danger of extinction.这种植物现在有绝种的危险。
• The island's way of life is doomed to extinction.这个岛上的生活方式注定要消失。