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off gear : 30 phrases in 12 subjects |
| Agriculture | 2 |
| Automobiles | 4 |
| Chemistry | 1 |
| Drilling | 1 |
| General | 2 |
| Metallurgy | 2 |
| Nautical | 1 |
| Oil / petroleum | 3 |
| Plastics | 1 |
| Space | 2 |
| Technology | 10 |
| Wind Energy | 1 |
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