theory
n. 理论, 学说, 原理, 意见, 推测 [化] 理论
发音
词形变化
教材释义与例句
理论；原理；学说；推测
an idea or set of ideas that is intended to explain something about life or the world, especially an idea that has not yet been proved to be true
Freudian theory has had a great influence on psychology.
弗洛伊德理论对心理学产生过巨大影响。
释义与例句
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1.
A description of an event or system that is considered to be accurate.
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2.
A coherent statement or set of ideas that explains observed facts or phenomena and correctly predicts new facts or phenomena not previously observed, or which sets out the laws and principles of something known or observed; a hypothesis confirmed by observation, experiment etc.
理论
学说
可数 不可数In its most proper acceptation, theory means the completed result of philosophical induction from experience.
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3.
The underlying principles or methods of a given technical skill, art etc., as opposed to its practice.
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4.
A field of study attempting to exhaustively describe a particular class of constructs.
理论
学说
可数 不可数 数学Knot theory classifies the mappings of a circle into 3-space.
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5.
A set of axioms together with all statements derivable from them; or, a set of statements which are deductively closed. Equivalently, a formal language plus a set of axioms (from which can then be derived theorems). The statements may be required to all be bound (i.e., to have no free variables).
定理
可数 数学 哲学 不可数A theory is consistent if it has a model.
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6.
The standardization and study of fixed sequences of moves, especially in the opening phase of a game.
可数 不可数Near-synonym: joseki
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7.
Mental conception; reflection, consideration.
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8.
A hypothesis or conjecture.
理论
可数 非正式 不可数
词汇关系
相关短语
词源
From Middle French théorie, from Late Latin theōria, from Ancient Greek θεωρία (theōría, “contemplation, divine perspective, speculation, a looking at, a seeking”), from θεωρέω (theōréō, “to look at, view, see, consider, examine”), from θεωρός (theōrós, “spectator”), from θέα (théa, “view, perspective, sight”) + ὁράω (horáō, “to see, look”) [i. e. θέαν ὁράω (théan horáō, “see, look at a view; survey + genitive”)].
来源：wiktionary