杂乱无章的话(或文字);冗长芜杂的文字;漫无边际的闲扯
long and confused speech or writing
  We were then subjected for fully half an hour to the ill-informed ramblings of a delusional old has-been. 
At the time, the essay was largely dismissed as the confused ramblings of an old woman.
 Please forgive my incoherent ramblings over dinner last night.
 Aren't these just the ramblings of a self-important loner? 
You then get three pages of tedious ramblings about local government.
 See also: rambling noun (SPEECH/WRITING)