纪录片《火星任务》 第30期 汪洋大海

Mount Sharp is a Martian mountain,

夏普山是火星上的一座山

rising 18,000 feet above the centre of the massive Gale¹ Crater².

在巨大的盖尔撞击坑中心 高达5500米

The scientists believe their Rover could find carbonates here,

科学家们认为火星车能在这里找到碳酸岩

proving this Martian crater was also filled with water

证明这个撞击坑在遥远的过去

in its ancient past.

也曾是一片汪洋大海

But that's not the only similarity that Mount Sharp has

但这并不是夏普山仅有的

with the mountains here in the Mojave Desert.

与莫哈韦沙漠群山相似的地方

In both places,

在这两个地方

the team can use the rock itself

科学家团队都能利用岩石本身

to travel back in time to any moment in the geological past.

分析出过去任何时候的地质状况

The mountains are formed of layers,

群山是由多个岩层

built up gradually over millennia³.

百万年以来逐渐堆积而成

Testing each one will reveal what the environment was like there

对地层进行检测就能知道

at the particular moment in time it was laid down.

这一地层形成时的环境状况

What we see here is a stack of layers

我们看到的这些岩层

that tell us about the early environmental history of the Earth,

向我们揭晓了地球早期

representing hundreds of millions of years.

几亿年间的环境变迁史

1 gale   

n.大风，强风，一阵闹声（尤指笑声等）

参考例句：

• We got our roof blown off in the gale last night.昨夜的大风把我们的房顶给掀掉了。
• According to the weather forecast,there will be a gale tomorrow.据气象台预报，明天有大风。

2 crater   

n.火山口，弹坑

参考例句：

• With a telescope you can see the huge crater of Ve-suvius.用望远镜你能看到巨大的维苏威火山口。
• They came to the lip of a dead crater.他们来到了一个死火山口。

3 millennia   

n.一千年，千禧年

参考例句：

• For two millennia, exogamy was a major transgression for Jews. 两千年来，异族通婚一直是犹太人的一大禁忌。
• In the course of millennia, the dinosaurs died out. 在几千年的时间里，恐龙逐渐死绝了。