commissioner
/kəˈmɪʃənə(r)/noun
1- a person appointed to a role on or by a commission, in particular受委托的人; 委员; 特派员, 尤指：
1.1
- a representative of the supreme authority in an area地区最高代表; 专员。
1.2
- the head of the Metropolitan Police in London伦敦首都警察局局长。
1.3
- N. Amer. a person appointed to regulate a particular sport〈北美〉体育组织的行政管理人, 干事：
a baseball commissioner.
棒球队总干事。
词源
late Middle English: from medieval Latin commissionarius, from Latin commissio （see COMMISSION）.