deputy
/ˈdepjutɪ; `dɛpjətɪ/ n
1 person who is given work, authority, etc (eg during sb's absence) 代理人; 代表
I'm acting as deputy till the headmaster returns. 我在校长回来前代行他的职务.
2 person who is immediately below the head of a business, school, etc （企业、 学校等领导人的）副手
the Director General and his deputy 董事长及其副手
[attrib 作定语]
the deputy headmistress 女副校长.
3 (in some countries, eg France) member of a legislative assembly （某些国家中, 如法国的）议员.