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| drilling for oil Boring a hole for extracting oil (为了提取石油而钻孔。) | |||
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钻探 石油 : 16 phrases in 7 subjects |
| Company name | 3 |
| Earth sciences | 1 |
| Environment | 2 |
| International trade | 1 |
| Mechanics | 1 |
| Steel production | 1 |
| Technology | 7 |
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