commercial traveller
noun /kəˌmɜːʃl ˈtrævələ(r)/
/kəˌmɜːrʃl ˈtrævələr/
(British English, old-fashioned)- a sales rep (= an employee of a company who travels around a particular area selling the company’s goods to shops and other businesses)
商业旅行者:销售代表