certification

n.证明

cerebral, cerebral haemorrhage, cerebral palsy, cerebration, ceremonial, ceremonially, ceremonious, ceremoniously, ceremony, cerise, CERN (also Cern), cert, Cert Ed, certain, certainly, certainty, certifiable, certificate, Certificate of Secondary Education, certificated, certified cheque, certify, certitude, cervical, cervix, Cesar Frank, Cesarian (also Cesarean), cessation, cession, cesspit, CET, cf, CFE, ch (also chap), cha-cha, Chablis, chafe, chaff, chaffinch, chafing-dish,