contact ['kɑn.tkt] n.接触，联系 v.联系
eg：Can I contact you by telephone?
我能通过电话联系你吗?
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contract ['kɒntrkt] n.合同
content ['kɑn.tent] n.内容 adj.满足的
voluntarily ['vɒləntrəli] adv.自愿地
eg：He made the promise quite voluntarily.
他完全自愿的做出了承诺。
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voluntary ['vɑlən.teri] adj.自愿的;志愿的;自发的;故意的
volunteer [,vɒlən'tɪə] n.志愿者;志愿兵
assignment [ə'saɪnmənt] n.任务;布置
eg：There was no telling what the next assignment would be.
不知道下一个任务将是什么。
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assignable [ə'saɪnəbəl] adj.[经] 可分配的;可指定的;可让渡的
assign[ə'saɪn] vt.分配;指派;[计][数] 赋值
proportion [prə'pɔrʃ(ə)n] n.比例
eg：His head is out of proportion to the size of his body.
他的头部与身体大小不成比例。
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proportional [prə'pɔrʃən(ə)l] adj.相应的，成比例的
disproportion [dɪsprə'pɔːʃ(ə)n] n.不均衡;不相称
vulnerable ['vʌlnərəbl] adj.易受伤害的
eg：His knee was his vulnerable spot.
他的膝盖是容易受伤的位置。
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be/have vulnerable to 易受...影响的
pursue [pər'su] v.追求
eg：If I have enough money, I would have had no doubt to pursue a famous car.
如果我有足够的钱，我会毫不犹豫的买一辆名车。
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pursuit [pər'sut] n.追求
in pursuit of 为了
operation [.ɑpə'reɪʃ(ə)n] n.操作;运行
eg：How much time do you usually complete the operation?
你通常花多少时间完成作业?
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cooperation [kəʊ,ɒpə'reɪʃ(ə)n] n.合作，协作
corporate [ˈkɔːrpərət] adj.法人的;共同的
improvement [ɪm'pruvmənt] n.改进;改善;改进处
eg：It is only a question of time, however, until we see an improvement.
不过我们会看到改善的，只是时间问题。
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improve [ɪm'pruːv] vt.改善，增进;提高的价值
improve in...在方面有所增长(或改善)
specialize ['speʃ(ə)l.aɪz] v.专门研究(或从事);专攻
eg：Most students do not expect to specialize in economics.
大多数学生并不想把经济作为专业。
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special[ˈspeʃ(ə)l] adj.特别的;专门的，专用的
specialized [ˈspeʃ(ə)lˌaɪzd] adj.专业的;专门的
chemical ['kemɪk(ə)l] n.化学品;化学制品 ; adj.与化学有关的;化学的;
eg：The chemical industry is one easy to have he pollution profession.
化学工业是一个容易产生污染的行业。
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chemist [ˈkemɪst] n.化学家;药剂师;药房
insurance [ɪn'ʃʊrəns] n.保险;保险业;保险费;保费
eg：How much will the insurance cost them?
买保险的费用要多少呢?
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insure [ɪn'ʃʊrə] v.投保，上保险
ensure [ɪn'ʃʊrə] v.确保
comprehensive [.kɑmprə'hensɪv] adj.全面的，理解的n.(英)综合中学
eg：People experience great wealth, they decided to see things more comprehensive.
大人们的阅历丰富，决定了他们看东西比较全面。
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comprehension [.kɑmprə'henʃ(ə)n] n.理解(力)