gōng / rén / men / zhèng / zài / yè / jiān / pū / guǐ / yǐ / miǎn / yǐng / xiǎng / bái / tiān / de / liè / chē / yùn / xíng工人们正在夜间铺轨,以免影响白天的列车运行。The workers are laying railway track at night to avoid disrupting daytime train services.