区别就是两者合成词是不一样,具体的不同如下bookcase中文意思是n.书架书柜例句The bookcase is screwed to the wall.书架用螺丝固定在墙上了。bookshelf书架例句This bookshelf currently contains 60 books but can hold 150 ones.这个书架上现在有60本书,但它能装下150本。