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| half-round | |||
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| arc; hemisphere | |||
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| semicircle | |||
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| half-round; semicircular | |||
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semicirculo : 30 phrases in 12 subjects |
| Aviation medicine | 1 |
| Communications | 1 |
| Construction | 4 |
| Forestry | 1 |
| Health care | 1 |
| Life sciences | 2 |
| Mechanic engineering | 4 |
| Medical | 10 |
| Scientific | 1 |
| Technology | 2 |
| Transport | 1 |
| Water resources | 2 |