carry out意为“执行、实行”；carry on表示“（继续）进行、进行下去”,强调坚持.如：
The group of soldiers carried out a secret military action the other day．
几天前,这群士兵执行了一次秘密的军事行动.
Comrades in Germany were carrying on a heroic fight against war under conditions of fascism at that time．
那时,在德国的同志正在法西斯的统治区进行一场英勇的反战斗争.