科学日报（2009-9-12）—即使能源价格上扬，大城市的很多私家车，仍旧单独出行。
ScienceDaily (Sep. 12, 2009) — In spite of rising energy prices, many car drivers in large cities still ride alone.
科学家们以华盛顿、纽约、芝加哥、洛杉矶等大城市为研究对象，用计算机模拟城市景观和恐怖炸弹的细节。
The scientists looked at Washington, New York, Chicago, Los Angeles and other big cities, using computers to simulate details of the urban landscape and terrorist bombs.
科学家们以华盛顿、纽约、芝加哥、洛杉矶等大城市为研究对象，用计算机模拟城市景观和恐怖炸弹的细节。
The scientists looked at Washington, New York, Chicago, Los Angeles and other big cities, using computers to simulate details of the urban landscape and terrorist bombs.
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