regress /ˈriːˌgrɛs/ verb
regresses; regressed; regressing
regresses; regressed; regressing
Learner's definition of REGRESS
[no object] technical
: to return to an earlier and usually worse or less developed condition or state倒退；退化；回归 — regression
/rɪˈgrɛʃən/ noun, plural regressions [count, noncount]