mull over (mulling,mulled,mulls)

• 1.  

  PHRASAL VERB（动词词组） If you mull something over, you think about it for a long time before deciding what to do. 斟酌

  例：

  McLaren had been mulling over an idea to make a film.

  麦克拉伦一直在琢磨着要拍一部电影。