Train running speed is one of the important factors affecting railway noises.

运行速度是影响铁路列车运行噪声特性的重要因素之一。

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With the increase of the train running speed, the requirements on the smoothness of the rails have become more and more strict.

随着行车速度的提高，对轨道的平顺性要求愈加严格。

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The problem exposed on the track structure of existing railways is found more and more serious with the increase of the train running speed.

随着列车速度不断提高，既有线轨道结构暴露出的问题越来越严重。

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(Talking) Eurostar,the high speed train linking Britain, France and Belgium, is finally running again, after a three day stoppage.

VOA: standard.2009.12.25