n. a well-substantiated explanation of some aspect of the natural world; an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena
n. a belief that can guide behavior
词态变化
复数形式:theories
常见例句
1
n a concept or idea not associated with any specific instance n a sketchy summary of the main points of an argument or theory v consider a concept without thinking of a specific example
2
the theory and practice of navigation through air or space
3
(philosophy) a philosophical theory as to what is beautiful a
4
n an investigation of the component parts of a whole and their relations in making up the whole n the abstract separation of a whole into its constituent parts in order to study the parts and their relations n a form of literary criticism in which the structure of a piece of writing is analyzed n the use of closed-class words instead of inflections: e.g., `the father of the bride' instead of `the bride's father' n a branch of mathematics involving calculus and the theory of limits
5
a political theory favoring the abolition of governments
