Policy--Social marketing programs can do well in motivating individual behavior change, but that is difficult to sustain unless the environment they're in supports that change for the long run.

策略（Policy）--社会营销项目在激励个体行为改变方面很有效，但是维持这样的改变却是困难的，除非他们所处的环境长期支持这种改变。

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Learn practical tips and techniques as well as see the bigger picture to help successfully leverage social media marketing for your own environment and purpose.

学习实用技巧和技能，同时展望更宏大的前景来提升社交新媒体市场营销方式可以帮助到未来的自身环境和目标的实现。

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Nowadays, the media ecological environment includes five sides, which are social environment, institution environment, cultural environment, marketing environment and technical environment.

媒介生态环境包括：社会环境、制度环境、文化环境、市场环境、技术环境五个方面。

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But Weissman says the survey by Green Seal and the firm EnviroMedia Social Marketing shows that consumers are uncertain how to tell whether a product helps the environment.

VOA: standard.2009.03.30