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| 头部控制 | |||
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| 头部控制 | |||
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head control : 38 phrases in 15 subjects |
| Automobiles | 1 |
| Aviation | 2 |
| Business | 2 |
| Construction | 1 |
| Drilling | 2 |
| Economics | 1 |
| Engineering geology | 2 |
| Finances | 1 |
| Hydrology | 1 |
| International trade | 1 |
| Nautical | 1 |
| Oil / petroleum | 13 |
| Space | 2 |
| Sports | 1 |
| Technology | 7 |