我是一名铁路工人，主要是对铁路信号设备的维修与维护的翻译：I am a railway workers, mainly on the repair and maintenance of railway signal equipment 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

I am a railroad worker, mainly for railway signaling equipment repair and maintenance

I am a railway workers, mainly on the repair and maintenance of railway signal equipment

I am a railroad worker, mainly is to the railway signal equipment service and the maintenance

I am a railway workers, mainly on the railway signal equipment maintenance

I am a railway workers, mainly on the repair and maintenance of railway signal equipment