regress

v.退步.退化；回归

regimentation, Regina, region, regional, regionalization, regionalize, regionally, register, register office, registered, registered nurse, registered post, registered trade mark, registrar, registration, registration number, registry, registry office (also `register office), Regius professor, regnant (often 常作 Regnant), regression, regressive, regret, regretful, regretfully, regrettable, regrettably, regroup, regrow, Regt, regular, regularity, regularization, regularisation, regularize, regularize, regularise, regularly, regulate, regulation, regulator, regulatory,