城市社区工作模式既是社区理论、政策与实践的核心议题，又是当代中国史研究的重要组成部分。

The model of urban community work is both the core issue of community theory, policy and practice and an important integral part of history study in contemporary China.

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同时，还研究了与股利金额相关的因素，希望能对股利政策的理论和实践有所裨。

At the same time, in favor of the theory and practice of dividends policy, we researched the factors correlative to dividends amount.

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因此，关注和研究城镇居民的休闲行为，构成了一个在理论、实践与政策等层面上都必需高度重视的问题。

So it's very important to pay high attention to the leisure behaviors of the urban residents both on theory and practice, as well as policy making.

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