get at someone 
phrasal verb with get verb uk/ɡet/ us/ɡet/  getting | got | got or gotten
  UK informal 
  (CRITICIZE)      
  一再批评;不断指责;老是数落(某人)
to criticize a person repeatedly
  He keeps getting at me and I really don't know what I've done wrong. 他没完没了地指责我,可我真的不知道自己做错了什么。 
   (INFLUENCE)      
 (通常指通过给钱或者威胁)对(某人)施加影响;买通,贿赂(某人)
to influence a person illegally, usually by offering them money or threatening them
  The accused claimed that the witness had been got at. 被告声称证人被收买了。