A how-to book, video, or other product provides advice on a particular activity:
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used to describe something that provides practical advice on a particular activity:
a book, DVD, etc. that gives practical advice on a particular activity:
英语词典包含110679条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。