talk around something        
phrasal verb with talk verb [ I ] uk/tɔːk/ us/tɑːk/
 (UK also talk round)拐弯抹角地说 
to avoid speaking directly about something
  He just kept talking around the subject and didn't tackle the main issues. 我觉得他只是不着边际地说了一通,没有涉及主要问题。