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| 11. | When a student recently saw two workmen using a pneumatic drill outside his university, he immediately |
| 最近有个学生看见两个人工人在大学校门外用风钻干活，马上打电话报告警察，说有两个学生装扮成工人，正在用风钻破坏路面， |
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| 12. | pneumatic drill support |
| 凿岩机气腿 |
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| 13. | The invention of pneumatic drill. This device compressed air to bore holes in the rock. |
| 风钻的发明。这种工具用压缩空气在岩石中打洞。 |
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| 14. | silenced pneumatic drill |
| 低噪音气动钻机 |
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| 15. | that two students dressed up as workmen were tearing up the road with a pneumatic drill. |
| 说有两个学生装扮成工人，正在用风钻破坏路面。 |
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| 16. | When a student recently saw two workmen using a pneumatic drill outside his university, |
| 最近有个学生看见两个工人在学校门外用风钻干活， |
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| 17. | close quarter piston air drill |
| 角隅风钻 |
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| 18. | pneumatic percussion drill |
| 气动冲击钻 |
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| 19. | a pneumatic drill |
| 气压钻机 |
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| 20. | pneumatic oscilating bone drill |
| 风动骨钻 |
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