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- climatic changes (3)
- 研究 (2)
- building, stormproof (1)
- emigration and immigration (1)
- environmental policy (1)
- environmental refugees (1)
- forced migration (1)
- global environmental change (1)
- human beings (1)
- infrastructure (economics) (1)
- structural design (1)
- 世界史 (1)
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- 中国 (1)
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- 宋代 (1)
- 影响 (1)
- 气候变化 (1)
- 煤炭资源 (1)
- 环境保护 (1)
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