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Modern urban business district is the key area of underground space development and utilization.
现代城市商务区是城市地下空间开发利用的重点地区。
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They also contribute to the economic development in the urban area.
它们另有帮于在城市地域的经济开展。
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They also contribute to the economic development in the urban area.
它们另有帮于在城市地域的经济开展。
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