“铁路建设”常见的英文表达是 railway construction 或 railroad construction(美式英语中常用“railroad”)。
例如:
The government is investing heavily in railway construction to improve transportation infrastructure.(政府正在大力投资铁路建设,以改善交通基础设施。)
Railroad construction in this region has brought significant economic development.(这个地区的铁路建设带来了显著的经济发展。)