Since the ICE 3 trains are the only ones able to run on the Köln-Frankfurt high-speed line with its 4.0% incline at the allowed maximum speed of 300 km/h, they are used predominantly on services that utilise this line. 参考译文:与ICE 2一样,ICE 3和ICE 3M也是作为短型列车(与ICE 1...