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无危险 : 30 phrases in 14 subjects |
| Architecture | 1 |
| Automobiles | 1 |
| Aviation | 2 |
| Business | 3 |
| Construction | 1 |
| Ecology | 1 |
| Electricity | 1 |
| Electronics | 2 |
| General | 8 |
| Medical | 1 |
| Nautical | 2 |
| Rowing | 2 |
| Technology | 4 |
| United Nations | 1 |
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