regularity

n.整齐；端正；规律

registered trade mark, registrar, registration, registration number, registry, registry office (also `register office), Regius professor, regnant (often 常作 Regnant), regress, regression, regressive, regret, regretful, regretfully, regrettable, regrettably, regroup, regrow, Regt, regular, regularization, regularisation, regularize, regularize, regularise, regularly, regulate, regulation, regulator, regulatory, regurgitate, regurgitation, rehabilitate, rehabilitation, rehabilitative, rehash, rehear, rehearing, rehearsal, rehearse, rehouse, Reich,