词典释义：
a cause, explanation, or justification for an action or event
理由，原因，诱因
-
the minister resigned for personal reasons 部长因个人原因辞职了
-
it is hard to know for the simple reason that few records survive.
仅仅因为记录少有幸存，所以难于了解。
[mass noun]good or obvious cause to do something
充分理由
-
we have reason to celebrate .我们完全有理由庆祝一下。
【逻】 理由，前提。
[mass noun]the power of the mind to think, understand, and form judgements by a process of logic
理智，理性；判断力，推理力
-
there is a close connection between reason and emotion .理智与感情之间有紧密的联系。
what is right, practical, or possible; common sense
道理，情理，明智；常识
-
people are willing, within reason, to pay for schooling .人们乐于付学费完全在情理之中。
(
正常神志
-
she is in danger of losing her reason .她面临神志不清的危险。
think, understand, and form judgements by a process of logic
推论，推理，作逻辑推理
-
humans do not reason entirely from facts 人类不完全根据事实进行推理
-
[as noun
reasoning ]the present chapter will outline the reasoning behind the review .这一章将对评论背后的推理进行概括。
[with obj.](
推论出，推断出；讲出…的道理。
(
对（某人）以理相劝，劝告
-
I tried to reason with her, but without success .我努力劝导她，但没有成功。
-
beyond （all） reason to a foolishly excessive degree 毫无道理，全然无理he indulged Andrew beyond all reason . 他毫无道理地纵容安德鲁 -
by reason of formal because of 〈正式〉 因为，由于persons who, by reason of age, are in need of care . 因年龄原因需要照顾的人 -
for some reason used to convey that one doesn't know the reason for a particular state of affairs, often with the implication that one finds it strange or surprising 不知什么原因，不知何故for some reason he likes you . 不知为什么他喜欢你 -
listen to reason be persuaded to act sensibly 服从理智；听取意见，接受道理the child is usually too emotionally overwrought to listen to reason . 这孩子通常太受感情左右，而不顾理智 -
theirs （或ours） not to reason why used to suggest that it is not someone's （or one's） place to question a situation or system 他们（或我们）无权过问 -
［ORIGIN with allusion to Tennyson's
Charge of the Light Brigade （1854）．］reason of state another term forRAISON D'ÉTAT . 同RAISON D'ÉTAT . （it） stands to reason it is obvious or logical 合情理；是当然的，自不待言it stands to reason that if you can eradicate the fear the nervousness will subside . 如果你根除恐惧心理，紧张感会随之减轻，这是显而易见的事情
-
a/one good reason 一个好的理由
真题例句：
-
for no reason 毫无理由
真题例句：
-
for good reason(s) 理由充分
真题例句：
-
there is no reason 没有理由；毫无道理
真题例句：
-
the reason why + 从句 ...的原因
真题例句：
-
no reason for doing sth 不是做...的理由
真题例句：
-
reason and think 理解和思考
真题例句：
-
the human ability to reason 人的思考能力
真题例句：
"Middle English： from Old French
