It analyzes the main industry’s rising, flourishing and recession in resource-city, and then carry through the theory research on resource-city’s industry change with the theory of sustainable development.2.
分析了资源型城市的资源主导产业兴起、兴盛直到衰退的周期性发展规律，进行了面向可持续发展的资源型城市产业转型理论研究。
参考来源 - “后石油时代”黄河三角洲地区可持续发展研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Tourism has become our main industry.
旅游业已经成为我们的主要产业。
The polluting factories were shut down in 2004, and villagers started grape cultivation, which soon became a main industry in Shashiyu.
2004年污染严重的工厂被关闭，村民开始种植葡萄，这很快成为沙石峪村的主要产业。
The main industry of this city is mining industry, which depends on unreproducible resources.
这个城市的主要工业是采矿业，它依赖于不可再生的资源。
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