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low level; lower level; lower flight level | |||
bottom level |
niveau inférieur : 29 phrases in 14 subjects |
Aviation | 10 |
Chemistry | 1 |
Communications | 1 |
Computers | 5 |
Earth sciences | 1 |
Electronics | 2 |
General | 1 |
International Monetary Fund | 1 |
Labor law | 2 |
Law | 1 |
Metallurgy | 1 |
Social science | 1 |
Transport | 1 |
Радиоактивное излучение | 1 |