“哈马舍尔德”维和三原则 the three principles put forward by the former UN Secretary-General Dag Hammarskjold

资本三原则 three capital principles

三原则 Three principles

三美原则 three principles of beauty ; three beauties

三个原则 Three Principles

第三条原则简洁 Conciseness

三自原则 Three-self principle

机器人工程三原则 The Three Laws of Robotics

三方原则 Three Parties principle

三A原则 three A principles