class of railway

例句：

1. 1. The class of railway engineers is responsible for designing and maintaining the railway system.
   铁路工程师这一类别负责设计和维护铁路系统。
2. 2. The class of railway engineers has a significant impact on the transportation industry.
   铁路工程师这一类别对交通运输行业有着重要的影响。
3. 3. The class of railway engineers plays a crucial role in ensuring the safety and efficiency of the railway system.
   铁路工程师这一类别在确保铁路系统的安全和效率方面发挥着至关重要的作用。