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| English thesaurus | |||
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| An air space of defined dimensions within which restrictions to the flight of aircraft may exist at specified times. (FRA) | |||
| caution: 45 phrases in 14 subjects |
| Business | 3 |
| Commerce | 1 |
| Communications | 6 |
| Earth sciences | 1 |
| Economy | 3 |
| Finances | 4 |
| Foreign trade | 1 |
| General | 11 |
| Law | 1 |
| Packaging | 1 |
| Patents | 3 |
| Rail transport | 2 |
| Technology | 5 |
| Transport | 3 |