The humanistic environment establish on the base of physical facilities, which is the reflection of the urban spirit.

城市人文环境是建立在物质设施基础上，城市精神层面的反映。

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An automatic accident detection method based on traffic flow parameters will be accessed, through simulating the physical environment of urban tunnel with traffic simulation software VISSIM.

采用VISSIM交通仿真软件，对城市隧道内的物理环境进行仿真，可设计出一种基于交通流参数的交通事故自动检测方法。

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The database consists two parts: one is the physical database of urban electromagnetic environment, the other is data dictionary.

数据库包括两部分：一是城市电磁环境物理数据库，二是数据字典。

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The picture conveys a vivid sense of the dangers, both physical and emotional, of day-to-day existence in this ravaged urban environment.

NEWYORKER: Boyz N the Hood

The researchers found that sitting was associated with a higher death risk after controlling for factors including age, gender, smoking status, physical activity, education, body mass index, as well as living in an urban or city environment.

FORBES: Why Sitting Increases Your Risk of Dying Sooner