disappoint one's expectations 辜负某人的期望另外有关此类的短语还有:1) come up to sb.'s expectations 不辜负某人的期望2) not fail to live up to sb.'s expectations 不辜负某人的愿望3) violated a puBlic trust. 辜负大众的期望4) meet one's expectations 达到某人的期望5) justify the hope of; not to disappoint; not to let sb. down 不辜负希望