The modeling and visualization on the virtual city scene are significantly studied and realized.

重点研究与实现了虚拟城市景观建模与三维可视化。

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And the city scene model and 3d visualization are the central technology in the processing of constructing the virtual city.

而在虚拟城市的构建中，城市景观模型的建立与三维可视化更是其基础核心技术。

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As one of the key technologies of the virtual city construction, virtual GIS has been a hot study area in the current research field of GIS.

虚拟GIS作为虚拟城市建设的关键技术之一，已经成为当前GIS研究领域的研究热点。

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Aristotle lived at the virtual cusp of the world of the autonomous city-state of the Greek polis.

亚里士多德住在可说是希腊城邦世界中,最顶尖的自治城市。

耶鲁公开课 - 政治哲学导论课程节选

Aleksandr Belykh, the head of the abuse department of FirstVDS, said the user of the virtual server identified in the City Newsstand investigation is Russian, and his firm hadn't received any complaints about it.

WSJ: Hackers New Target: Small Firms With Lax Security

They are programmed into the virtual model as well, creating a detailed virtual city which anyone can navigate with the click of a computer mouse.

CNN: Virtual L.A.: A traffic-less trip

Merchant and Chief Digital Officer Rachel Haot announced the winning prototypes from the Reinvent Payphones Design Challenge, a competition that engaged hundreds of urban designers, planners, technologists and policy experts to create physical and virtual prototypes that imagine the future of the City's approximately 11, 000 public pay telephones.

ENGADGET: NYC awards six Reinvent Payphones finalists, asks public to select favorite via Facebook