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rótula : 60 phrases in 14 subjects |
| Agriculture | 2 |
| Brazil | 12 |
| Chemistry | 3 |
| Commerce | 2 |
| Earth sciences | 1 |
| Economy | 2 |
| Electric motors | 1 |
| Environment | 8 |
| General | 6 |
| Materials science | 10 |
| Mechanic engineering | 4 |
| Medical | 4 |
| Patents | 2 |
| Transport | 3 |
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