(1)双重代理；双方代理
代理人同时代理相互间存在利益冲突的双方当事人进行同一项交易活动的行为。

(2)双重间谍
同时为两个敌对国家或市场竞争者服务的间谍行为。

• Deposit Insurance Act
• Deposit Insurance Corporation
• deposit in trust
• deposition
• deposition de bene esse
• deposito
• deposit of earnest money
• deposit of title-deeds
• deposit of wills
• depositor
• depositor's guaranty fund
• depository
• depository bank
• depository for wills of living persons
• depository transfer check/DTC
• deposit premium
• deposit ratio
• deposit receipt
• deposit slip
• deposits tax
• deposit subject to final payment
• depositum
• De Praerogative Regis
• de praesenti
• deprave