long-term       
adjective uk/ˌlɒŋˈtɜːm/ us/ˌlɑːŋˈtɝːm/
B2 长期的
continuing a long time into the future
  long-term unemployment 长期失业 
 long-term care for the seriously ill 重病患者的长期护理 
 the long-term effects of the drug 该药的长期疗效 
 - More examples
 - It's too early to assess the long-term consequences of the collapse of the Soviet Union.
 - We want long-term solutions, not short-term palliatives.
 - Requited love is not enough to sustain a long-term relationship.
 - What this country needs is a long-term policy for investment in science and technology.
 - The long-term unemployed now constitute a sort of underclass.