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- 研究 (5)
- charitable uses, trusts, and foundations (1)
- charities (1)
- charity organization (1)
- city planning (1)
- health aspects (1)
- history (1)
- pedestrian areas (1)
- planning (1)
- supporting organizations (charities) (1)
- sustainable urban development (1)
- urban renewal (1)
- 国家创新系统 (1)
- 技术革新 (1)
- 旅游业发展 (1)
- 无污染技术 (1)
- 标准化 (1)
- 航空 (1)
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