王宗炎序 沈家煊序 導(dǎo)讀 list of figures list of tables abbreviations chronology introduction 1 the genesis of the learner's dictionary 2 phraseology and the learner's dictionary 3 the second generation of learners' dictionary 4 the role of the computer in learner lexicography 5 the third generation of learners'dictionaries 6 focus on the dictionary user postscript references index 文庫索引