从空间层次上来看，城市游憩空间一般来说包括四个层级，即小区游憩、社区游憩、城区游憩和城市游憩；
Thirdly, in view of spatial hierarchy, urban recreation space always includes four classes: block recreation, community recreation, district recreation and urban recreation.
假如化学物品未被安全使用或释放危险的量到你居住、工作或游憩的环境里时，你和你的社区都可能有危险。
You and your community are at risk if a chemical is used unsafely or released in harmful amounts into the environment where you live, work, or play.
城市居住社区是一个在一定地域范围内为居民提供居住、游憩和日常生活服务的社区。
Urban Residential community serves as the community offering residents with services concerning dwelling, recreation and daily life within certain territorial scope.
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