deputy
['depjʊtɪ]
n. 代理人,代表
I’m acting as deputy while the boss is away.
老板不在的时候,我就代理他的工作。
adj. 副的,代理的
deputy director/deputy general manager 副主任/副总经理

agent
['eɪdʒ(ə)nt]
n. 代理人,代理商,特工
All these years he's been an agent for the East.
这些年来他一直为东方国家做间谍。
agency n. 代理,中介,专业行政机构(或部门)

representative
[reprɪ'zentətɪv]
n. 代表;众议员 adj. 典型的,有代表性的;
She had a stressful job as a sales representative.
作为一名销售代理,她的工作压力很大。

behalf
[bɪ'hɑːf]
n. 代表;利益
He spoke on behalf of all the members of the faculty and staff.
他代表全体教职员工讲了话。
substitute
['sʌbstɪtjuːt]
n. 代用品;代替者v. 替代
You can substitute oil for butter in this recipe.
这道菜中你可以用食用油代替黄油。
a substitute teacher 代课教师
candidate
['kændɪdeɪt; -dət]
n. 候选人,候补者;
There are three candidates standing in the election.
有3位候选人参加竞选。
institute
['ɪnstɪtjuːt]
n. 学会;学院vt. 开始(调查);创立;
to institute a government / to institute a law 建立政府/ 制定法律
Massachu-setts Institute of Technology (MIT) 麻省理工学院
institution n. 制度;建立
institutions of higher education 高等院校
constitute
['kɒnstɪtjuːt]
vt. 组成;建立;任命
Women constitute about ten percent of Parliament.
女性在议会中约占10%。
to constitute new traffic regulations制定新的交通规则
constitution n. 宪法;章程

superstition
[,suːpə'stɪʃ(ə)n; ]
n. 迷信
I don’t believe in the old superstition that the number 13 is unlucky.
我不相信数字13不吉利这样的旧迷信思想。