1. They used six million tons of rock.
    他们共用了六百万吨石头。

2. Towards the outside, the rock is cool and hard.
    靠近地表是冷却硬化的岩石。

3. There are different kinds of rock.
    岩石类型繁多，

4. The moon is a ball of cold rock.
    月亮是一个冷的岩石球，

5. The radio clicked on. Rock music blasted forth.
    收音机 "嘟"地一声，摇滚乐就 "哗啦"地响开了。

6. He gets his thrills from rock-climbing.
    他从攀岩运动中得到兴奋、 刺激的感受.

7. He noticed that a river of liquid rock was coming towards him.
    他发现有一股岩浆正向他流过来，

8. He opened the bag, full of small pieces of gold. He left half the gold on a rock.
    他打开小包，里面全是小金块。他丢了一半在岩石上。

9. On the very outside of the earth is a bumpy crust of rock and soil.
    地球的最外层是由岩石和土壤构成的凹凸不平的硬壳，

10. It cuts a clean cylinder of rock, from which can be seen the strata the drill has been cutting through.
    它切割出一块表面光滑的圆柱体石头, 从这石块上可以看出钻头在切割的岩层.