impairment
noun [ U ] uk/ɪmˈpeə.mənt/ us/ɪmˈper.mənt/
损伤，损害
the act of spoiling something or making it weaker so that it is less effective
medical specialized（身体功能的）障碍
deterioration in the functioning of a body part, organ, or system that can be temporary or permanent and can result from injury or disease
Renal impairment needs to be treated urgently. 肾功能障碍必须尽快医治。