rail crane

例句：

1. 1. The railway crane isused to transport heavy loads across the tracks.
   铁路起重机用来在铁轨上运输重物。
2. 2. The engineer was busy inspectingthe railway crane before the construction began.
   工程师忙于在建设开始前检查铁路起重机。
3. 3. The railway crane is essential forensuring the safety of workers during construction.
   铁路起重机对于确保施工工人的安全至关重要。