bow down to someone 
phrasal verb with bow verb [ I or T ] uk/baʊ/ us/baʊ/
  mainly UK      
 服从,遵从,听命于…
to show respect to someone and agree that they are more powerful than you 
  He expects me to bow down to him and do everything he tells me. 他希望我服从他,对他俯首帖耳。