81. | If they knew how difficult it was to drill through the hard rock , they would lose heart. |
| 如果他们知道了钻透那坚硬的岩石有多么困难,他们会丧失信心的。
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82. | It cuts a clean cylinder of rock , from which can be seen the strata the drill has been cutting through. |
| 这种钻头能切割一段光滑的圆柱形岩石,从中能看出所钻透的地层。
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83. | Later, by the lakeshore, I panned the rock . |
| 后来,在湖边,我把这块岩石淘洗了一下。
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84. | Sooner or later, the sand and the particles of rock drop from the wind to the ground. |
| 砂土和岩石的碎粒迟早会从风里落到地面上。
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85. | During the discussion of rock singing verses at last month's stockholders' meeting, Levin asserted that "music is not the cause of society's ills" and even cited his son, a teacher in the Bronx, New York, who uses rap to communicate with students. |
| 在-上个月的股东大会上关于摇滚歌词的讨论中,莱文宣称说:"音乐不是 社会问题的原因",他甚至还以他的儿子为例。他的儿子是纽约州布朗克 斯的一个教师,并用说唱音乐与学生们进行沟通。
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86. | She is crazy about rock and roll. |
| 她喜欢摇滚乐。
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87. | The road was blocked by a huge rock . |
| 道路被一块大石头堵住了。
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88. | The ship struck on a rock and sank. |
| 船触礁沉没。
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89. | All of a sudden the ship struck a rock . |
| 突然船撞在石头上。
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90. | They're trying to blast away the face of the rock . |
| 他们试图炸开岩石的表面。
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