英语语法分析

Vienna is a beautiful old city on the River Danube in the center of Europe.

维也纳是欧洲中部多瑙河畔的一座美丽的古城。

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，那里的日耳曼部落更加动荡不安。

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.

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。