| 例句 |
retrogressionnoun the act or an instance of going back to an earlier and lower level especially of intelligence or behaviorsocial instability that has led to a retrogression of moral values and standards of decent behavior regression, reversion backslide, lapse, relapseatavism, returnnondevelopmentdecline, degeneration advancement, development, evolution, progression gestation, growth, maturation, ripening in 1604 |