zhè / bù / jì / lù / piān / jiǎng / shù / le / tiě / dào / bīng / zài / jiān / kǔ / tiáo / jiàn / xià / xiū / jiàn / tiě / lù / de / gù / shì

这部纪录片讲述了铁道兵在艰苦条件下修建铁路的故事。

This documentary tells the story of the railway troops building railways under harsh conditions.