minder          
noun [ C ] UK uk/ˈmaɪn.dər/ us/ˈmaɪn.dɚ/
 随护人员,保镖
someone who protects another person, often a famous person, from danger and unwanted public attention
  The president arrived surrounded by his minders. 总统在保镖的簇拥下到达了。 
  (对某人言行的)控制者,顾问
someone who controls what another person says and does
  His public-relations minder refused to allow him to answer any of the journalists' questions. 他的公共关系顾问禁止他回答记者的任何提问。