purge  
 verb [ T ] uk/pɜːdʒ/ us/pɝːdʒ/
  (REMOVE PEOPLE)      
  清除,肃清(反对者)
to get rid of people from an organization because you do not agree with them
  Party leaders have undertaken to purge the party of extremists. 政党领袖已采取行动清除党内的极端分子。 
 Hard-liners are expected to be purged from the administration. 主张强硬路线的人预计将从政府中清除出去。 
   (REMOVE EVIL)      
 使涤罪;使洁净
to make someone or something free of something evil or harmful
  Roman Catholics go to confession to purge their souls/themselves (from/of sin). 罗马天主教徒前去忏悔以净化灵魂/涤罪。 
 The new state governor has promised to purge the police force of corruption. 新州长已保证要清除警察队伍中的腐败现象。 
 purge       
noun [ C ] uk/pɜːdʒ/ us/pɝːdʒ/
 清洗(从一个组织中清除持不同政见者的行动)
the act of getting rid of people from an organization because you do not agree with them
  Between 1934 and 1938, Stalin mounted a massive purge of the Communist Party, the government and the armed forces in the Soviet Union. 1934至1938年间,斯大林对苏联的共产党、政府和军队实行大清洗。