英语中总会遇到一些又长又难的词汇，记忆有难度。但如果结合句子来看，相信会容易不少。新东方在线整理了一些真题中常考的一些长难词，结合真题例句和翻译，大家加深记忆。
2018考研英语必背长难词（23）
approximately [əˈprɔksimitli] ad.近似地，大约
[真题例句] During several years of gambling in that casino ,Williams, a state auditor earning $35,000 a year ,lost approximately $175,000.[2006年新题型]
[例句精译] 威廉姆斯是一名州审计师，每年挣35000美元，但是在娱乐场的几年赌博中，大约输掉了175000美元。
antibacterial [ˌæntibækˈtiriəl] a.抗菌的;n.抗菌药
[真题例句] He experimented with antibacterial substances for nine years before he made his discovery.[1994年阅读5]
[例句精译] 他(亚历山大·弗莱明爵士)是对抗菌物质进行了长达9年的实验才有了这项发明。
alternatively [ɔːlˈtɜːnətɪvli] ad.作为选择，二者择一地
[真题例句] If you are talking to a group of managers, you may refer to the disorganized methods of their secretaries; alternatively if you are addressing secretaries, you may want to comment on their disorganized bosses.[2002年阅读1]
[例句精译] 如果你在和一群经理谈话，你就可以评论他们秘书的工作方法紊乱;相反，如果你在和一群秘书谈话，你就可以评论他们老板的工作方法紊乱。
advertisement [ədˈvə:tismənt] n.广告，做广告
[真题例句] It lowers the costs of many services: without advertisements your daily newspaper would cost four times as much, the price of your television licence would need to be doubled, and travel by bus or tube would cost 20 per cent more.[1995年阅读1]
[例句精译] 它(广告)降低了多种服务费用，没有广告，每天看的报纸价格会上涨四倍，电视收视费会翻番，公共汽车或地铁票也得提高20%以上。