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| 能源环境: 44 phrases in 11 subjects |
| China | 1 |
| Construction | 1 |
| Earth sciences | 14 |
| Ecology | 4 |
| Environment | 5 |
| General | 3 |
| Geology | 2 |
| Name of organization | 2 |
| Space | 2 |
| Technology | 2 |
| United Nations | 8 |
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