a book一本书aart.一(个)；每一(个)；任一(个)n.英语字母表的第一个字母；学业成绩得优者；表示“最好”的符号A Tree Grows in Brooklyn一颗生长在鲁克林的树a slim chance of success成功的可能性不大a four-in-hand coach四匹马马车a posteriori probability后验概率A visual presentation.可以看得见的礼物a carvel-built ship.一艘由船体板平铺成的 轮船A file that declares the一个为域声明a well-groomed lawn.修剪得整整齐齐的草坪a self-confident child自信的孩子A canon projects shot.大炮发射炮弹。