单词：superannuates
v. 因落后于时代而废除, 勒令退学( superannuate的第三人称单数 )
v retire and pension (someone) because of age or physical inability
v declare to be obsolete
v become obsolete
v retire or become ineligible because of old age or infirmity
v declare to be obsolete
v become obsolete
v retire or become ineligible because of old age or infirmity