象那本那么大的书是不是装订的.A book as big as that is not a manageable size.他们的业务来自于几个大出版商，这些出版商的书都是他们装订的。Their business came from a few big publishers, all of whose books they bound.那本书是用蓝色的皮革装订的.The book was bound in blue leather....
用不同颜色的毡头笔画草图，以免搞混。Use different colours of felt pen on your sketch to avoid confusion.草图应该是最终绘画的某种演练。The sketch should be a kind of rehearsal for the eventual painting.你最好还是画张这栋建筑的草图.You'd better block in a plan of ...