In the first five months of this year sales of consumer e-books in america overtook those from adult hardback books .
今年的前五个月美国的电子书销量超越了成人精装书。
Book buyers have been used to hardback books being the most expensive , with softcover versions being priced much less , while e-book versions are cheaper still .
买书的人们已经习惯了精装书价格最贵、平装书便宜很多,而电子图书更为廉价的状况。
Obviously the production cost of a hardback book is greater than that for a paperback , with both of these far and away more expensive to produce than a kindle or epub version .
显然,精装书要比平装书的生产成本高,而这两者的生产成本无疑都高于kindle或epub文本的成本。
For now , makinson says , digital books are expanding the market ; hardback sales in the us are up this year , despite the march of ebooks .
梅金森说目前数字图书正在扩展其市场;尽管电子书在大行其道,今年美国的精装书销量仍在上升。
The society 's 115000 members and its hundreds of books currently in production rather belie last year 's prognosis by the head of hachette , the large french publisher , that hardback books could be killed off by e-books .