1.内容无价值的书,为满足市场需要而滥竽充数的书
1.a book meant primarily for practical use or visual enjoyment rather than literary merit
1.not in the form of a book or books, or consisting of other things than books, e.g. as videotapes
1.The Multimedia Database Development of Nonbook materials Under the Network Environment
网络环境下的非书资料多媒体数据库建设