secyn.秘书SECadj.(香槟酒等)无甜味的abbr.第二的(=second)；（=U.S. Security and Exchang Commission） 美国证券交易委员会securitization of risk风险证券化sec-n-amyl alcohol二乙基甲醇sec-butyl propionate丙酸仲丁酯securities combination证券组合securitization of debt债务证券化secodihydrocastoramine闭联二氢蓖麻胺securing of the profit取得利润securities safekeeping证券保管secoiridoid glycosides裂环烯醚萜甙类securing of containers集装箱系固