163. implicit a. 内含的;含蓄的> If it is ~, it is implied.

164. impulse n. 冲动

165. incidence a. 发生率

166. indignant a. 愤怒的

167. infectious a. 传染的

168. ingenious a. (人)灵巧的; (设计等)巧妙的 ~ handicraftsman

169. inherent a. 固有的 the ~ defects of planned-economy

170. initiate v. 开始;发起 ~ a new plan

171. integral a. 构成整体所必须的;不可缺的 Rice is an ~ part of Chinese diet.

172. intelligible a. 明白易懂的

173. intensify v. 加剧 The noise intensified.

174. intermittent a. 断断续续 the ~ rain showers

175. intimidate v. 恐吓 176. intricate a. 错综复杂的

177. intrinsic a. 固有的 ~ value

178. intuition n. 直觉 Your ~ is your sixth sense.

179. invalid a. 无效的 an ~ license

180. invariably ad. 不变地; 始终

181. irritate v. 使恼怒 =annoy

182. jeopardize v. 危及=endanger>You ~ your job by being late often.

183. junk n. 废物 ~ food

184. kidnap v. 绑架

185. legend n. 传奇

186. legitimate a. 合法的 =legal/lawful

187. liability n. 责任;=legal obligation不利条件=drawback

188. literacy n. 读写能力

189. literally ad. 逐字地; 确实地

190. litter v. 乱扔 No littering!

191. magnify v. 放大，扩大> ~ the photo

192. manifest v. 显示，表明The illness ~s itself with a high fever.

193. marginal a. 微小的

194. masculine a. 男性的

195. mediate v. 调解 He ~d in a salary dispute between the union and the management.

196. merge a. 合并

197. migrate v. 迁徙; 移居> seasons

198. mingle v 混合

199. mobilize v. 动员

200. na?ve a. 天真的=innocent

201. negligible a. 可以忽略不计的 the ~ cost

202. norm n. 标准 reach the ~

203. notable a. 著名的

204. notorious a. 臭名昭著的 If one has a scandal, he becomes ~