hù / shi / men / lún / liú / shàng / yè / qín / què / bǎo / bìng / fáng / lǐ / yì / zhí / yǒu / rén / zhí / shǒu

护士们轮流上夜勤，确保病房里一直有人值守。

The nurses take turns working night shifts to ensure that someone is always on duty in the ward.