theory

n. 理论；原理；学说；推测

n.

学说；理论；原理；推测

变形

复数：theories

双语释义

[C]学说 a reasonable or scientifically acceptable explanation for a fact or event

[U]理论,原理 general principles and knowledge as opposed to practical methods or skills

[C]意见,看法 opinion or supposition, not necessarily based on reasoning

英英释义

theory[ 'θiəri, 'θi:ə- ]

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

"true in fact and theory"

a tentative theory about the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena

"a scientific hypothesis that survives experimental testing becomes a scientific theory"; "he proposed a fresh theory of alkalis that later was accepted in chemical practices"

同义词：hypothesispossibility

a belief that can guide behavior

"the architect has a theory that more is less"; "they killed him on the theory that dead men tell no tales"

词汇搭配

用作名词 (n.)

动词+～

accept theory接受理论

have a theory有一种说法

形容词+～

abstract〔crude〕 theory抽象〔不成熟〕的理论

介词+～

in theory在理论上

on the theory根据理论

～+介词

theory about writing写作理论

theory of gravitation万有引力学说

词组短语

in theory理论上

basic theory基本理论

control theory控制理论，控制论

game theory博弈论，对策论

system theory系统论

management theory管理理论

set theory集合论

economic theory经济理论；理论经济学

deng xiaoping theory邓小平理论

fuzzy theory模糊理论；含模理论

general theory一般理论；统一理论

learning theory学习理论；学习论

information theory信息论；情报理论

graph theory图论

field theory场论

reliability theory可靠性理论

probability theory概率论

political theory政治学理论

optimization theory最优化理论

wave theory[物]波动论；波动说

双语例句

用作名词(n.)

There're many theories about the origin of life.
关于生命起源的学说有很多。

In theory, anything could happen.
理论上来说,任何事情都会发生。

Not everyone can understand Einstein's Theory of Relativity.
不是每个人都能读懂爱因斯坦的相对论的。

In his book, he explained the operating theories of computer in detail.
在他的书中,他详细阐述了计算机的工作原理。

Mary is full of fascinating theories about men and women.
玛丽对男人和女人充满了迷人的想法。

She has a theory that drinking milk prevents cold.
她有一种说法,认为喝牛奶能防止感冒。

权威例句

theory

theory: [16] The etymological notion underlying theory is of ‘looking’; only secondarily did it develop via ‘contemplation’ to ‘mental conception’. It comes via late Latin theōria from Greek theōríā ‘contemplation, speculation, theory’. This was a derivative of theōrós ‘spectator’, which was formed from the base thea- (source also of theásthai ‘watch, look at’, from which English gets theatre).Also derived from theōrós was theōreín ‘look at’, which formed the basis of theórēma ‘speculation, intuition, theory’, acquired by English via late Latin theōrēma as theorem [16]. From the same source comes theoretical [17].=> theatre

theory (n.)

1590s, "conception, mental scheme," from Late Latin theoria (Jerome), from Greek theoria "contemplation, speculation; a looking at, viewing; a sight, show, spectacle, things looked at," from theorein "to consider, speculate, look at," from theoros "spectator," from thea "a view" (see theater) + horan "to see," possibly from PIE root *wer- (4) "to perceive" (see ward (n.)). Earlier in this sense was theorical (n.), late 15c. Sense of "principles or methods of a science or art" (rather than its practice) is first recorded 1610s (as in music theory, which is the science of musical composition, apart from practice or performance). Sense of "an intelligible explanation based on observation and reasoning" is from 1630s.