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取心的 : 37 phrases in 10 subjects |
| Business | 3 |
| Drilling | 19 |
| Earth sciences | 2 |
| Economy | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 7 |
| Metallurgy | 1 |
| Mining | 1 |
| Oil / petroleum | 1 |
| Securities | 1 |
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