inured

多年的艰苦工作使他习惯了长时间的压力。

Years of hard work ___inured him to prolonged stress.

长期在高海拔地区工作使他适应了稀薄的空气。

Working at high altitudes for years ___inured him to the thin air.

长期上夜班让他习惯了睡眠不足的生活。

Working night shifts for years has ___inured him to sleep deprivation.