tree surgeon
noun [ C ] uk/ˈtriː ˌsɜː.dʒən/ us/ˈtriː ˌsɝː.dʒən/
（工作职责是保证树木健康安全的）树木保护人
a person whose job is to take care of trees and make sure that they are healthy and safe, for example by cutting off branches that are damaged
Synonym: arborist