How do you use "theory" in a sentence?

Einstein's theory of relativity changed our understanding of the universe. In theory, the plan should work, but I have my doubts. There are several theories about why the dinosaurs became extinct.

theory

Q: What does "theory" mean?

A system of ideas to explain something A 'theory' is a system of ideas intended to explain something, especially one based on general principles. 'In theory' means something should be true based on principles, but may not work in practice. The adjective form is 'theoretical.'

Vocabulary Word BritishAmerican ★★★★★ Very Common Neutral

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意味: A system of ideas to explain something

理论，学说

teoría

理論、学説、仮説

이론, 학설, 가설

A 'theory' is a system of ideas intended to explain something, especially one based on general principles. 'In theory' means something should be true based on principles, but may not work in practice. The adjective form is 'theoretical.'

「theory」是旨在解释某事的一套思想体系，尤其是基于一般原则的。「in theory」意思是根据原则应该是正确的，但在实践中可能行不通。形容词形式是「theoretical」。

Una «theory» es un sistema de ideas destinado a explicar algo, especialmente uno basado en principios generales. «In theory» significa que algo debería ser cierto según los principios, pero puede que no funcione en la práctica. La forma adjetiva es «theoretical».

「theory」は何かを説明するための考え方の体系で、特に一般原則に基づいたものです。「in theory」は原則的には正しいはずだが、実際にはうまくいかないかもしれないことを意味します。形容詞形は「theoretical」です。

'Theory'는 특히 일반 원리에 기반하여 어떤 것을 설명하기 위한 사상 체계이다. 'In theory'는 원리상으로는 맞지만 실제로는 그렇지 않을 수 있다는 의미이다. 형용사형은 'theoretical'이다.

例文

Einstein's theory of relativity changed our understanding of the universe.
爱因斯坦的相对论改变了我们对宇宙的理解。
La teoría de la relatividad de Einstein cambió nuestra comprensión del universo.
アインシュタインの相対性理論は宇宙についての私たちの理解を変えた。
아인슈타인의 상대성 이론은 우주에 대한 우리의 이해를 바꾸었다.
In theory, the plan should work, but I have my doubts.
理论上这个计划应该可行，但我有些怀疑。
En teoría, el plan debería funcionar, pero tengo mis dudas.
理論上はその計画はうまくいくはずだが、疑問がある。
이론적으로는 그 계획이 잘 될 것이지만, 의문이 있다.
There are several theories about why the dinosaurs became extinct.
关于恐龙为什么灭绝有几种理论。
Hay varias teorías sobre por qué los dinosaurios se extinguieron.
恐竜が絶滅した理由についてはいくつかの説がある。
공룡이 멸종한 이유에 대해서는 여러 가지 학설이 있다.

発音

使い方ガイド

場面: general

トーン: neutral

起源と歴史

From Greek 'theoria' meaning 'contemplation, speculation, a viewing', from 'theoros' (spectator), from 'thea' (a view). Originally used for philosophical speculation; the scientific sense came much later.

文化的背景

Era: Modern

Generation: All ages

Social background: Universal

ストーリーと豆知識

From Greek 'theoria' meaning 'contemplation, speculation.' Originally used for philosophical speculation, it now primarily refers to scientific explanations based on evidence and testing.

このトピックの他の表現

be ★★★★★ To exist or live; to have a particular quality, state, or... and ★★★★★ Used to connect words, phrases, or clauses of equal impor... of ★★★★★ Expressing the relationship between a part and a whole; b... to ★★★★★ Expressing direction, destination, or the infinitive form... a ★★★★★ Used before a noun to indicate one single thing or person in ★★★★★ Located inside a place, area, or container; during a peri...