noun🔗Share理论，学说 A description of an event or system that is considered to be accurate."Scientists develop theories to explain how the universe works. "科学家们建立理论来解释宇宙的运作方式。theorysciencephilosophysystemlogicChat with AIVocabulary GamePractice Reading
noun🔗Share理论，学说。 Mental conception; reflection, consideration."After hours of contemplation, she shared her theories about why the business failed, hoping to learn from the experience. "经过数小时的深思熟虑后，她分享了自己对于公司失败原因的看法和见解，希望能从这次经历中吸取教训。theorymindphilosophysciencelogicChat with AIVocabulary GamePractice Reading
noun🔗Share理论，学说。 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."Scientists develop theories to explain how the universe works. "科学家们发展理论来解释宇宙的运作方式。theorysciencephilosophystatementlogicChat with AIVocabulary GamePractice Reading
noun🔗Share理论, 学说 The underlying principles or methods of a given technical skill, art etc., as opposed to its practice."While Maria understood the theories of photography from her textbook, she needed practice to take good pictures. "虽然玛丽亚从课本上理解了摄影的理论知识，但她还需要通过实践才能拍出好照片。theoryphilosophysciencetechnicalsystemlogicabstracteducationChat with AIVocabulary GamePractice Reading
noun🔗Share理论，学说. A field of study attempting to exhaustively describe a particular class of constructs."Knot theory classifies the mappings of a circle into 3-space."结环理论对圆在三维空间中的各种映射进行分类。(Jié huán lǐlùn duì yuán zài sānwéi kōngjiān zhōng de gèzhǒng yìngshè jìnxíng fēnlèi.)theorysciencephilosophyeducationChat with AIVocabulary GamePractice Reading
noun🔗Share理论，假说 A hypothesis or conjecture."Sentence: Scientists have many theories about what caused the dinosaurs to disappear. "科学家们对于恐龙灭绝的原因有很多假说。theoryphilosophysciencelogicdoctrineChat with AIVocabulary GamePractice Reading
noun🔗Share理论，学说 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)."A theory is consistent if it has a model."如果一个理论存在模型，那么它就是自洽的理论。（这里“理论”指的是一套有特定规则和假设，并且内部逻辑一致的体系。）theorysciencephilosophylogicstatementChat with AIVocabulary GamePractice Reading
