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| a dos estratos | |||
| de dos etapas | |||
| de dos pisos | |||
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a deux etages : 31 phrases in 11 subjects |
| Agriculture | 5 |
| Antennas and waveguides | 1 |
| Chemistry | 2 |
| Earth sciences | 4 |
| Economics | 8 |
| Electronics | 1 |
| Food industry | 1 |
| General | 2 |
| Mechanic engineering | 2 |
| Natural sciences | 1 |
| Transport | 4 |