《剑桥高阶英汉双解词典》是2008年1月外语教学与研究出版社出版的图书，作者是英国剑桥大学出版社。
收词广泛全面：共收录词目、短语170，000余条，增收新词1000余条；
突出词语搭配：例证中醒目呈现25，000余条词语搭配，另提供400余处搭配专栏；
习语丰富实用：近6000条习语助力英语学习；附录特设“习语索引”，查找一步到位；
精选短语动词：约3000条短语动词，丰富表达，考试必备；
剖析常见错误：设200余处“学习者常见错误”及40项“用法说明”专栏，详解典型错误；
提供词频标注：重点词汇按使用频率分为三级，一目了然，方便重点掌握；
例证典型地道：90,000余条例证均取自“剑桥国际语料库”，权威地道，真实自然。
Cambridge Advanced Learner's Dictionary（Second Edition）是凝聚着剑桥创新精神的一部高端精品，外语教学与研究出版社推出的是它的双解版，书名定为《剑桥高阶英汉双解词典》，它收录词目及短语170,000余条，覆盖面广，集学习词典、搭配词典、习语词典、考试词典于一身，是中高级英语学习者及雅思、BEC考生的理想工具书。
Welcome to the second edition of the Cambridge AdvancedLearner's Dictionary. English is constantly evolving with new wordscoming into the language all the time. It is hard to believe thatwords like‘website’‘text messaging’or‘reality TV’were unknownto most people just a few years ago, when now they are in commonuse. Dictionaries have to keep up with thi-s change, and thisedition contains a wealth of new vocabulary. Of course, a lot of itcomes from the world of computers and the Internet (e.g. blog,whiteboard, graphics card), but many other areas are represented(e.g. speed dating, superbug, hoody).欢迎使用《剑桥高阶英语学习词典》的第二版。英语不断地发展演变，每时每刻都有新词成为其中的一员。很难相信，诸如webs-ite,text messaging和realityTV之类现已广泛使用的词汇，就在几年前还鲜为人知。词典必须跟上这些变化，本版便收录了大量的新词。当然，其中很多新词来自计算机和因特网领域（例如blog,whiteboard, graphics card），但也有不少来自其他领域（例如speed datin-g, superbug,hoody）。
A major feature of this edition is the introduction of theFrequency Information system. It is special because it shows th-erelative importance not only of words but also of their meanings,and of individual phrases. To create this system, res-earchers useddata from our corpus. They extracted all the high-frequency wordsand then coded examples of them to work o-ut the frequency of theirdifferent meanings.引入词频信息系统是本版词典的一大特点。其重要意义在于，它不仅显示了词语的相对重要性，还显示了各义项以及每个短语的相对重要性。为了开发这个系统，研究人员使用了我们语料库中的语料。他们从中选出了所有的高频词语，然后对各词语的例证进行编码，从而计算出不同义项的使用频率。
The resulting system gives students a clear guide to the mostimportant words and meanings to learn最终生成的词频系统清晰地告诉学生们学习哪些词汇、哪些义项才是最重要的:
Meanings marked are words which everyone needs to know inorder to communicate effectively. They areeither extremelycomm-on (usually over 400 occurrences per 10 million corpus words),or they express core concepts (e.g. asleep). There are abo-ut 4900of these meanings. 标有E（Essential基础词汇）的义项是每个人为达到有效交流的目的必须掌握的词语。它们要么极为常用（在语料库中一般每千万词出现400次以上），要么表示核心概念（例如asleep）。这类义项约有4900个。
Meanings marked are also common in native speaker English(typically between 200~400 occurrences per 10m corpus words). Li-keEssential, this band can include less common words which expressuseful concepts. There are about 3300 of these meanin-gs.标有I（Improver中级词汇）的义项在母语为英语的人群中也很常用（在语料库中一般每千万词出现200~400次）。和基础词汇一样，中级词汇包括一些表示有用概念的不太常用的词汇。这类义项约有3300个。
Something else new in this edition is the 400 boxes givingconcise collocation information for common words. Knowing how t-oput a word in context is vital for fluent English, and these boxessupplement the 25 000 collocations shown in heavy ty-pe in theexample sentences.本版词典的新颖之处还有：它为常用词汇设置了400个简明的搭配信息框。英语要达到流利程度，知道如何将一个词置于语境中至关重要。这些搭配信息框就是对例句中以粗体字显示的25000个搭配的有益补充。
I hope you will enjoy using the Cambridge Advanced Learner'sDictionary. You can look at this and our other dictionaries o-nlineat dictionary.cambridge.org, and also use the website to send usyour comments or suggestions for the next edition!衷心希望大家乐于使用这部《剑桥高阶英语学习词典》。您可以登录dictionary.cambridge.org在线查阅本词典以及我们的其他词典，同时也可通过本网站将评论或对下一版的建议发送给我们！
Elizabeth Walter
伊丽莎白·沃尔特
April 2005
2005年4月
