Knowledge economy, an economy which is based on production, distribution and use of knowledge and information, is opposite to Agriculture economy and Industry economy one another.

知识经济是建立在知识和信息的生产，分配和使用之上的经济，是与农业经济、工业经济相对应的概念。

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In developed countries, cluster economy, based on the industry cluster, has become the key sector and light spot of regional economy for a long time.

在发达国家，基于产业集群而形成的集群经济早已成为区域经济的重要板块和亮点。

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The cyclic economy is the necessary choice for iron and steel industry that is based on resources.

做为资源型行业的钢铁行业，走循环经济之路，更是必然的选择。

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Increasingly, experts see natural gas as the only economically feasible way to build a new, less-polluting, hydrogen-based economy--a vast market allowing the oil industry a second act at the center of a transportation revolution.

FORBES: Magazine Article

If I tell you that a large section of Iraq's industry and economy is based on Soviet and Russian technology - not the most advanced but nevertheless still functioning - that means the assets that are there and that need to be put back will need spare parts, technical support and so on.

BBC: Breakfast with Frost

Although we often talk about a 54.5 mpg-equivalent average for the industry, individual fuel economy and emissions requirements actually vary based on the size of a vehicle.

WHITEHOUSE: What the New Fuel Economy Standards Mean for You