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| natural energy sources | |||
| 自然能 源 资源: 18 phrases in 10 subjects |
| Earth sciences | 6 |
| Ecology | 1 |
| Economy | 1 |
| General | 1 |
| International trade | 1 |
| Name of organization | 2 |
| Oil / petroleum | 3 |
| Technology | 1 |
| Telecommunications | 1 |
| United Nations | 1 |
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