| 71. | The drill wormed its tongue into the solid rock . |
| 钻子的长钻头钻入了坚硬的岩石。
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| 72. | He fell over a rock in his path. |
| 他走路时在一块石头上绊了一跤。
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| 73. | She has a keen following among rock fans. |
| 她在摇滚乐迷中拥有一批热心的追随者。
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| 74. | The boat was foul of a rock . |
| 那条船撞在礁石上。
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| 75. | Geologists study rock formation. |
| 地质学家研究岩石的形成。
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| 76. | He lit the fuse and ran behind the rock before the bomb could explode. |
| 他点燃导火线，然后在炸弹爆炸以前跑到了岩石后面。
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| 77. | The castle is founded on solid rock . |
| 这个城堡建在坚硬的岩石上面。
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| 78. | Towards evening, the boat struck a rock and the girl jumped into the sea. |
| 天将黑时，小船撞在了一块礁石上，姑娘跳进了海里。
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| 79. | 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，
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| 80. | If there had not been a hard layer of rock beneath the soil, they would have completed the job in a few hours. |
| 如果不是因为土壤下面有一层坚硬的岩石，他们的营救工作仅用几个小时就可以完成了。
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