A doctrine is a set of principles or beliefs, especially religious ones.
例句
...the doctrine of reincarnation.輪回轉世說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圖與他的文本沒有聯系的學說。
N-COUNT
(尤指政府外交政策的)正式聲明
A doctrine is a statement of official government policy, especially foreign policy.
例句
Following World War II, the first U.S. commitment to Europe came in the form of the 1947 Truman Doctrine.二戰后，美國對歐洲作出的第一個承諾便是在 1947 年提出杜魯門主義。