AOPUn.亚大邮联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 tall building高层建筑物a field of rape一块油菜田a wretched meal质量低劣的一顿饭A toothsome pie可口的馅饼a curl of smoke一缕烟A Board machine卷板机a gem of a poem一首宝石般的小诗a pledge of aid援助的誓约a catty comment尖酸刻薄的话a case of theft盗窃案