| 释义 |
theory
UK ['θɪə.ri] US ['θɪr.i] noun countable or uncountable
ESSENTIAL
■a formal statement of the rules on which a subject of study is based or of ideas which are suggested to explain a fact or event or, more generally, an opinion or explanation 理论；学说；意见•economic theory经济理论 •scientific theory科学理论 •Darwin's theory of evolution达尔文的进化论 •He has a theory that the hole was caused by a meteorite.他认为那个洞是陨石坠落形成的。 in theory ADVANCED
■If something is possible in theory, it should be possible, but often it does not happen in that way 理论上，从理论上讲•In theory, the journey ought to take three hours, but in practice it usually takes four because of roadworks.按理说，行程应该只要三小时，但由于道路施工，实际上通常会需要四小时。 |