资料来源 : pyDict

总的看法,一般看法;略读,浏览

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Overview \O"ver*view`\, n. [Cf. {Survey}.]
   An inspection or overlooking. [Obs.] --Shak.

资料来源 : WordNet®

overview
     n : a general summary of a subject; "the treasurer gave a brief
         overview of the financial consequences"