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油面表 : 41 phrases in 10 subjects |
| Architecture | 1 |
| Automobiles | 6 |
| Drilling | 1 |
| Earth sciences | 1 |
| General | 2 |
| Hydroelectric power stations | 1 |
| Mining | 1 |
| Oil / petroleum | 5 |
| Technology | 22 |
| Wind Energy | 1 |
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