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| heißer Draht | |||
| fil chaud: 35 phrases in 11 subjects |
| Astronomy | 1 |
| Chemistry | 7 |
| Earth sciences | 1 |
| Electronics | 8 |
| Industry | 2 |
| Measuring instruments | 4 |
| Medical appliances | 3 |
| Metallurgy | 2 |
| Natural resourses and wildlife conservation | 1 |
| Natural sciences | 1 |
| Technology | 5 |