| 例句 |
retrogressionsnounpl. of retrogression 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 regressions, reversions backslides, lapses, relapsesatavisms, returnsnondevelopmentsdeclines, degenerations advancements, developments, evolutions, progressions gestations, growths, maturations |