当时，德国西部的边境沿着莱茵河和多瑙河延伸了1000英里，那里的日耳曼部落更加动荡不安。
The West then was exposed to the more volatile tribal Germanic peoples on a frontier that stretched along the Rhine and Danube rivers for 1,000 miles.
当时，德国西部的边境沿着莱茵河和多瑙河延伸了1000英里，暴露在边境处变得更加动荡不安的日耳曼部落之下。
The West was then exposed to the more volatile tribal Germanic peoples on a frontier that stretched along the Rhine and Danube rivers for 1,000 miles.
一种是需要经济运行的实时模拟，由庞大的数据库支持，运行很像目前在达拉斯市和德国北莱茵-威斯特法利亚地区所使用的交通预报模型。
One vision is a real-time simulation, fed by masses of data, that would operate rather like the traffic-forecasting models now used in Dallas and in the North Rhine-Westphalia region of Germany.
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