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 sly puss(要提防的)狡猾女郎;[美]姑娘气的青年

1. He's good at dressing shop windows but he really had to put his thinking cap on when they asked him for an idea for a carnival float.
   他擅长布置橱窗，但他们向他征求狂欢节彩车时的意见时，他实在得好好考虑一下。