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稳固 的 : 32 phrases in 15 subjects |
| Air defense | 1 |
| Architecture | 1 |
| Business | 2 |
| Chemistry | 2 |
| Drilling | 1 |
| Economics | 6 |
| Electric machinery | 1 |
| Football | 1 |
| General | 3 |
| Hydroelectric power stations | 5 |
| Military | 1 |
| Scientific | 3 |
| Sports | 1 |
| Technology | 3 |
| Textile industry | 1 |
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