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。