what is the term "avant garde" in english literature?Engligh

what is the term "avant garde" in english literature?Engligh avant-garde是什么意思 Applying avant-garde technologyomplex language is as challen 英语翻译翻译：The event will present a metropolitanand avant-garde he is famous in the literature c Why is Shakespeare so great in English literature? 英语翻译The most influential writer in all of English literature 英语翻译Probably the best-known lines in English literature,Haml what is the longest word in English 英语翻译Business in Literature Literature is at once the most in there is a tree in the garden与there is one tree in the garde Everyone is in the garden.(变位反意疑问句） Everyone is in the garde