你上邮局的话捎带给我买几张纪念邮票: if you happen to be going to the post office please get me some commemorative stamps
一套: 1.(固定方式) one's set way 短语和例子他干事有他的一套。 he has his own set way of doing things.2.(固定内容) convention; the same stuff 短语和例子老一套 old convention; the same old stuff3.(用于成组的事物) a set; a flat; a sui