[] the activities involved in protecting a country, building or person against attack, danger, etc. 保护措施；安全工作◆airport/hotel security 机场／酒店的安全措施◆There will be round-the-clock security at the factory. 这家工厂将实施 24 小时保安。⨁lax / strict / tight security 马虎的／严格的／严密的安全措施⨁to improve / strengthen / tighten security 改进／加强安全措施⨁a security alert / check / system 安全警报／检查／制度
[] the department of a large company or organization that deals with the protection of its buildings, equipment and staff 保安部门◆Security was/were called to the incident. 保安人员被叫到事发现场。◆the head of security 保安部门主管
[] protection against sth bad that might happen in the future 担保；保证◆financial security 金融担保◆Which type of investment offers the greatest security? 哪一种投资的安全性最高？⨁economic / financial security 经济／金融安全⨁to give (sb) / have / offer (sb) / provide (sb with) security 为…提供担保
(; ) securities [] a financial asset such as a share or bond; the certificate that shows you own this 证券◆to buy high-yield securities 购买高收益证券◆Merrill Lynch is one of the world's biggest securities firms. 美林集团是世界最大的证券公司之一。◆the change from paper to electronic securities 纸质证券向电子证券的转变⨁to buy / hold / sell securities 购买／持有／出售证券⨁to deal in / issue securities 经营／发行证券⨁a securities business / company / dealer / firm / house 证券业务／公司／交易商／企业／公司
(; ) [, ]a valuable item that you agree to give to sb if you are unable to pay back the money that you have borrowed from them 抵押品◆His home and business are being held as security for the loan. 他的房子和公司已被用作这笔贷款的抵押品。◆Shares in the company were pledged as security against the loan. 在这家公司中持有的股份被用作该笔贷款的抵押品。⨁to give / offer / pledge sth as security 将某物充当抵押品
convertible security dated security employment security fixed-interest security government security job security mortgage-backed security social security