zhè / bù / jì / lù / piān / tōng / guò / cè / xiě / jǐ / gè / pǔ / tōng / jiā / tíng / zhǎn / xiàn / le / chéng / shì / shēng / huó / de / biàn / huà这部纪录片通过侧写几个普通家庭,展现了城市生活的变化。This documentary portrays several ordinary families to show how city life has changed.