Encyclopedia Britannica Encyclopedia Britannica
大英百科全书，世界上最知名、最权威的百科全书 Explore the fact-checked online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of objective articles, biographies, videos, and images from experts.
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剑桥词典 Cambridge Dictionary
The most popular dictionary and thesaurus for learners of English. Meanings and definitions of words with pronunciations and translations.
剑桥翻译 Cambridge Dictionary
剑桥翻译 The most popular dictionary and thesaurus for learners of English. Meanings and definitions of words with pronunciations and translations.
wikipedia维基百科 Dictionary
wikipedia维基百科镜像站，方便国内访问 The World's most comprehensive free online dictionary, thesaurus, and encyclopedia with synonyms, definitions, idioms, abbreviations, and medical, financial, legal specialized dictionaries