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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 : 26 phrases in 14 subjects |
| Chemistry | 2 |
| Commerce | 1 |
| Economics | 3 |
| Environment | 1 |
| Finances | 3 |
| Health care | 1 |
| Materials science | 2 |
| Medical | 1 |
| Microsoft | 3 |
| Natural sciences | 1 |
| Politics | 3 |
| Social science | 1 |
| Statistics | 1 |
| Transport | 3 |