a leak漏缝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 beast in human shape人面兽心a one-piece swimsuit一件式泳装a lucrative investment赚钱的投资A. P. L. hormone[医] [垂体]前叶样激素, 绒[毛]膜促性腺激素A bur of this plant.这种植物的刺果a crude stone artifact一种原石的人造物品A boundary or limit.界线或限制a slinky night-dress显出优美身段的睡衣.a breaking out journey突围之旅a sentry/signal box岗亭；铁路信号所