introductory

形容词 introductory:

1. serving to open or begin
2. serving as a base or starting point
   同义词：basic
3. serving as an introduction or preface
   同义词：prefatorial, prefatory

1. An introductory list of highlights from the program or text that follows, as in a broadcast or magazine.
   插播节目或文章之前的一段介绍性目录的要点，如在广播或杂志中
2. An introductory occurrence or fact; a preliminary.
   开端预兆性事件或事实; 开端
3. An introductory performance, event, or action preceding a more important one; a preliminary or preface.
   序幕先于较重要部分的介绍性表演，事件或行动; 开端或序

in.tro.duc.to.ry

adj.Abbr. intro.（形容词）缩写 intro.
Of, relating to, or constituting an introduction.
介绍的：属于、关于、或组成介绍的
Serving to introduce.See Synonyms at preliminary
初步的：作为引言的参见 preliminary

【引伸】
in.troduc.torily
adv.（副词）