gōng / zuò / rén / yuán / zài / shān / lù / páng / lì / le / yí / kuài / jiè / pái / tí / xǐng / yóu / kè / zhè / lǐ / yǐ / jīng / jìn / rù / bǎo / hù / qū

工作人员在山路旁立了一块界牌，提醒游客这里已经进入保护区。

Staff put up a boundary marker beside the mountain road to remind visitors that they had entered a protected area.