现代大学英语精读5 Unit 2,3,4,6,7 课后翻译(8)

5. …who said that on a scale of one to ten of increasing probability of biological origin, he could only grant the alleged Martian fossils a two.

在分成一至十的等级表上，等级越高，生物起源的可能性就越大。他说他只能给所谓的火星化石一个二级。

6. There was a time when plate tectonics—the movement and collision and subduction of vast slabs of the Earth's crust—was deemed a very strange idea.

有一段时间，板块构造地质学被视作十分怪异的主张，板块地质学是指地壳的巨大板块的移动、碰撞、下沉。

7. Mars has no such mechanism, and this seemingly minor deficiency may be the reason Mars lost most of its atmosphere.

火星没有这种机制，而这一看似微不足道的缺陷也许就是火星失去其大部分空气的原因。

8. …who argue that high intelligence has occurred only once on Earth, among something like a billion species. Hence it is a billion—to—one long shot.

他提出，高智能在地球上近十亿物种中只出现一个。因此，只有十亿分之一的成功机会。

9. That on the only planet we know of that has life, intelligence appeared. That’s a one—for—one proposition.

在我们知道的有生命的唯一星球上出现了具有智能的物种，其比率为