theory n.ri( theories ) 双解释义 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 词汇搭配 动词+ accept theory接受理论 have a theory有一种说法 形容词+ abstractcrude 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 句型例句There are many theories about the origin of life.关于生命起源的学说有很多。Your plan sounds fine in theory.你的计划在理论上听起来不错。He was studying music theory.他在学习乐理。She has a theory that drinking milk prevents colds.她有一种说法,认为喝牛奶能防止感冒。 补充资料词源希腊语theoria(理论,原理)