 |
| 不变的: 187 phrases in 14 subjects |
| Business | 6 |
| Economy | 1 |
| Education | 3 |
| Electronics | 6 |
| Finances | 1 |
| General | 105 |
| Geology | 1 |
| Mathematics | 13 |
| Mechanics | 1 |
| Oil processing plants | 1 |
| Philosophy | 2 |
| Quality control and standards | 1 |
| Technology | 45 |
| United Nations | 1 |
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