高媛媛，何金海，王自发。2007。城市化进程对北京区域气象场的影响模拟[J]。气象与环境学报，23 (3)：58 - 64。
Gao Yuanyuan, He Jinhai, Wang Zifa. 2007. Simulation for impact of urbanization on meteorological conditions in Beijing area [j]. J meteor Environ, 23 (3) : 58-64.
由联合国开发计划署实施的全球环境基金小额赠款项目正在北京召开区域研讨会。
The Global Environment Facility Small Grants Program, an initiative implemented by the United Nations Development Program, is hosting a regional workshop in Beijing.
北京就曾针对小排量汽车和卡车上路时间段和行驶区域公布过不同的限制性规定。
Beijing put varying restrictions on small cars and trucks, limiting where and when they could drive.
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