 |
| |||
| lock; key | |||
| de serrure: 59 phrases in 14 subjects |
| Automobiles | 1 |
| Biology | 1 |
| Building materials | 1 |
| Communications | 3 |
| Construction | 20 |
| General | 8 |
| Industry | 3 |
| Materials science | 1 |
| Mechanic engineering | 6 |
| Metallurgy | 1 |
| Municipal planning | 1 |
| Sports | 1 |
| Technology | 2 |
| Transport | 10 |