forest ranger
noun [ C ] US uk/ˌfɒr.ɪst ˈreɪn.dʒər/ us/ˌfɔːr.ɪst ˈreɪn.dʒɚ/
护林员，森林巡逻员
someone whose job involves protecting forests and areas of open country, for example by dealing with forest fires, and by making sure people obey laws relating to fishing, hunting, and camping