Nà / bù / jìlùpiàn / yǐ / lìshǐ / zīliào / wéi / jīchǔ / jièshào / le / mángliú / xiànxiàng / duì / chéngshì / guǎnlǐ / zàochéng / de / yālì

那部纪录片以历史资料为基础，介绍了盲流现象对城市管理造成的压力。

Based on historical materials, the documentary describes the pressure that the rural migrant phenomenon placed on urban management.