sycophant       
noun [ C ]  formal disapproving uk/ˈsɪk.ə.fænt/ us/ˈsɪk.ə.fænt/
 马屁精;阿谀奉承的人
someone who praises powerful or rich people in a way that is not sincere, usually in order to get some advantage from them
  The prime minister is surrounded by sycophants. 首相身边都是马屁精。 
 See: sycophantic
 - More examples
 - He is enabled by low-life sycophants who thrill in being around his celebrity.
 - At his coronation, he comes across like an artist at his first big gallery show, surrounded by hypocritical sycophants.
 - Sycophants will rise to the top if a team is discouraged from giving frank opinions.
 - She appears to be a crawly sycophant or a shameless self promoter.
 - The advisers are sycophants and they will never tell him to retire.