boundary rider
noun🔊/ˈbaʊndri raɪdə(r)/
🔊/ˈbaʊndri raɪdər/
(Australian English, New Zealand English)a person whose job is to maintain the outer fences of a farm He worked as a boundary rider before getting involved in farming. 在涉足农业之前，他曾担任过边界骑手。