relentlessly       
adverb uk/rɪˈlent.ləs.li/ us/rɪˈlent.ləs.li/
C2 不间断地,持续地
in an extreme way that continues without stopping
  She has campaigned relentlessly for her husband's release from prison. 她为争取丈夫的获释而不懈努力。 
 Summer there is relentlessly hot. 那里的夏天持续地酷热。 
 See: relentless
 - More examples
 - We must relentlessly pursue our objectives.
 - The children were relentlessly high-spirited.
 - She pestered them relentlessly with questions.