shì / bīng / men / lún / liú / zài / guān / chá / shào / zhí / yè / jiān / shì / zhōu / wéi / de / dòng / jìng

士兵们轮流在观察哨值夜，监视周围的动静。

The soldiers took turns standing night watch at the sentry post and monitoring the area.