a reference work (often in several volumes) containing articles on various topics (often arranged in alphabetical order) dealing with the entire range of human knowledge or with some particular specialty
造句
用作名詞(n.)
I found the cyclopedia very useful. 我認為百科全書很有用。
When John has to write a report,he would refer to the cyclopedia. 約翰必須寫報告時，就會查閱百科全書。