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| English thesaurus | |||
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| Lights placed across the ends of a runway or landing strip to indicate its usable limits | |||
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threshold : 11 phrases in 9 subjects |
| Agriculture | 1 |
| Austrian usage | 1 |
| Economics | 2 |
| Environment | 1 |
| Information technology | 2 |
| Microsoft | 1 |
| Social science | 1 |
| Statistics | 1 |
| Transport | 1 |