chew; chewing n. 咀嚼;咀嚼物
vt. 嚼碎，咀嚼
vi. 细想，深思The practice of chewing gum has been with us for more than a century.嚼口香糖的习惯已经伴随我们一个多世纪了。effectn. 影响;效果;作用
vt. 产生;达到目的What were the effects of the decision she made? 她的决定有什么影响?uneasyadj. 不舒服的;心神不安的;不稳定的The curious looks from the strangers around her made her feeluneasy.她周围陌生人好奇的目光使她感到很不自在。ban bannedvt. 禁止，取缔
n. 禁令，禁忌Smoking will be banned in all pubs, clubs and workplaces. 酒吧、俱乐部和工作场所将禁止吸烟。forbiddenadj. 严禁的，禁用的;被禁止的Women could not take part and were forbidden, on pain of death，even to attend the Games.妇女不能参加甚至被禁止出席这个运动会。treat, treated vt. 治疗;对待;探讨;视为
vi. 探讨;请客;协商
n. 请客;款待The FDA allows food to be treated with three types of
radiation. FDA(美国食品及药物管理局)允许食品受(这)三种辐射。explorev. 探测;探索;探险A man begins to explore the fat problem in the early 30s.男人是在30出头开始担心肥胖问题的。variousadj. 各种各样的;多方面的An estimated 17 million people die of various disease. 估计有1700万人死于各种疾病。understandvt. 理解;懂;获悉;推断;省略
vi. 理解;懂得;熟悉Obviously，you should not increase your reading speed if you do not understand what you are reading. (原文：09年教材,Hints for Reading Practice)很明显,如果你不理解阅读材料，就不应该增加阅读速度。studyn. 学习，研究;课题;书房;学问
vt. 学习;考虑;攻读;细察
vi. 研究;用功Market studies have shown that many consumers are afraid that. 市场研究表明：许多消费者害怕