mid-15c., inhabilite, "disqualification for office," from in- (1) + ability. Earlier was unability "incapability; incompetence" (late 14c.). General sense by c. 1500.
权威例句
1. He was frustrated by his inability to wave down a taxi.
连一辆出租车都打不到,他很沮丧。
2. Her inability to concentrate could cause an accident.
她无法集中精力可能会导致事故。
3. a congenital inability to tell the truth
生就的不会说实话
4. the government's inability to provide basic services