Reasonable tourism development of historical cultural cities may bring them substantial space and social, economic benefit and satisfy the cost on their protection.

对历史文化名城进行合理的旅游开发可以给历史文化名城带来的巨大的空间、社会和经济效益，并满足其自身的保护成本。

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With the rapid development of China's economic and expansion of cities, development of underground space has become a major problem for solve urban traffic.

随着我国经济的飞速发展，城市规模的不断扩大，开发地下空间已经成为了解决城市交通问题的主要手段。

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Hypersonic vehicle has a broad applied prospects, it could help to achieve economic and efficient development of space.

高超声速飞行器有着广阔的应用背景，可以帮助人们实现经济、高效的太空开发和利用。

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As Mr Gaidar argued, if modernisation of the country were a real priority, the state would have to clear social and economic space for the development of society, which would in turn mean ceasing to raid businesses and concentrating on its key tasks: education, health care and helping the poor.

ECONOMIST: Modernising Russia

Ouyang says the aim of China's space program is clear: to advance the country's economic and scientific development.

NPR: China Aims High For Its Space Program

For example, our local co-working space, The Grove, received assistance through Project Storefronts, a city economic development program to help boost the vitality of the Ninth Square neighborhood.

FORBES: With Strong Community Support, Startups Create More Than Jobs