Se·cu·ri·ties and Exchange CommissionAHD[sĭ-ky‹rʹĭ-tēz] D.J.[sɪˈkjʊərɪtiːz]K.K.[sɪˈkjʊrɪtiz]n.（名词）abbr. SEC【缩写】
A U.S. government agency that supervises the exchange of securities so as to protect investors against malpractice.证券交易委员会：美国负责指导证券交易的政府机构，目的在于保护投资者不受非法行为的侵犯