palliative         
noun [ C ] uk/ˈpæl.i.ə.tɪv/ us/ˈpæl.i.ə.t̬ɪv/
 medical specialized治标药物,缓解剂;治标措施,保守疗法 
a drug or medical treatment that reduces pain without curing the cause of the pain
  formal权宜之计;缓冲剂;消极措施 
something that makes a problem seem less serious but does not solve the problem or make it disappear
  We want long-term solutions, not short-term palliatives. 我们需要长期的解决方法,而非短期的权宜之计。