Collins Cobuild English Dictionary for Advanced Learners
Collins COBUILD Advanced Learner's English Dictionary(NEW EDITION)
Collins COBUILD ADVANCED DICTIONARY of American English
这三本各自有什么样的特点,都是什么出版社搞的?尤其是前两本,有哪些版本?哪个版本最好?
呵呵,提高悬赏说不定有人混水摸鱼。看来高手太少了。