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| 环境计划 (用公式或者系统表达保护自然或生态资源的的方法。) | |||
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environmental plan : 17 phrases in 7 subjects |
| Aviation | 3 |
| Earth sciences | 3 |
| Environment | 2 |
| Hydroelectric power stations | 1 |
| International Monetary Fund | 1 |
| Technology | 4 |
| United Nations | 3 |
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