The novel sold 200 , 000 copies in hardcover and 2 million in paperback.那本小说的精装本卖了二十万册,平装本卖了两百万册.The hardcover is more expensive.精装本比较贵.Buyers of E - books e - books a good cupper: Traditional hardcover books often coste...
For many years sundials have cast their spell over scientists and mathematicians.多年来，日晷一直吸引着科学家和数学家们。As far as mathematicians are concerned, there's a certain virtue in wearing intellectual blinkers.就数学家们来说，用学者的眼光来看...