1. 信条;主义;学说;（尤指）宗教教义
    A doctrine is a set of principles or beliefs, especially religious ones.

    e.g. ...the doctrine of reincarnation.
           轮回转世说
    e.g. I disagree with the doctrine that the writer''s life and intention have no bearing on his texts.
           我不同意作者的生活和意图与他的文本没有联系的学说。

2. (尤指政府外交政策的)正式声明
    A doctrine is a statement of official government policy, especially foreign policy.

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    e.g. Following World War II, the first U.S. commitment to Europe came in the form of the 1947 Truman Doctrine.
           二战后，美国对欧洲作出的第一个承诺便是在 1947 年提出杜鲁门主义。

1. a belief (or system of beliefs) accepted as authoritative by some group or school

    Synonym: philosophyphilosophical systemschool of thoughtism