纪录片《地球劫难日》 第18期 毫无线索

And the final part of the model shows that lava¹ has filled the crater² and flowed beyond the edges of the crater

模拟的最后阶段显示熔岩灌满了陨石坑，甚至漫出陨石坑的边缘。

and the original crater structure, we can see the walls here is completely drowned by the large volume of lava,

我们可以看到原来的陨石坑，包括它的坑壁都已被大量熔岩彻底淹没，

so that there's no outward shape of the crater visible from the surface.

所以从地表根本看不出陨石坑的形状。

It meant the Permian crater would have entirely³ filled with lava.

也就是说二叠纪撞击坑完全注满了熔岩。

The reason nobody had found a crater was because there wasn't one.

人们之所以找不到它就是因为它已经不存在了。

It was a fascinating idea, but was it also too neat?

这种观点很有说服力，但它是不是太简单了呢？

When a large meteor hits the earth, it leaves more than one fingerprint⁴.

当大型天体撞击地球时通常会留下不止一个伤疤。

It also leaves a trail of shattered rock and dust which are blasted around the globe by the force of the collision.

同样也会留下碎石和尘埃因撞击力而被撒落全球的痕迹。

If John was right, the Permian meteor should have left similar traces.

如果Jones是正确的，那么二叠纪陨星也应该留下类似的证据。

But despite looking in Permian rocks, the length and breadth of the planet,

但是在地球上无论多宽多长的二叠纪岩层中，

nobody could find a single trace of the meteor.

都没能发现有关陨石的一点线索。

1 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。

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 entirely   

ad.全部地，完整地；完全地，彻底地

参考例句：

• The fire was entirely caused by their neglect of duty. 那场火灾完全是由于他们失职而引起的。
• His life was entirely given up to the educational work. 他的一生统统献给了教育工作。

4 fingerprint   

n.指纹；vt.取...的指纹

参考例句：

• The fingerprint expert was asked to testify at the trial.指纹专家应邀出庭作证。
• The court heard evidence from a fingerprint expert.法院听取了指纹专家的证词。