n. 原因; 道理; 理智
v. 推理; 思考，判断
The reason for something is a fact or situation which explains why it happens or what causes it to happen.
There is a reason for every important thing that happens...
Who would have a reason to want to kill her?
If you say that you have reason to believe something or to have a particular emotion, you mean that you have evidence for your belief or there is a definite cause of your feeling.
They had reason to believe there could be trouble...
He had every reason to be upset...
The ability that people have to think and to make sensible judgments can be referred to as reason .
...a conflict between emotion and reason...
Mike is my voice of reason. He thinks logically and points out where I'm going wrong.
If you reason that something is true, you decide that it is true after thinking carefully about all the facts.
I reasoned that changing my diet would lower my cholesterol level...
'Listen,' I reasoned, 'it doesn't take a genius to figure out what Adam's up to.'
If you do not know why someone did something, you can say that they did it for reasons best known to themselves. You usually use this expression when you do not agree with what they did.
For reasons best known to himself, Algie changed his name.
If one thing happens by reason of another, it happens because of it.
The boss retains enormous influence by reason of his position...
He pleaded innocent by reason of insanity.
If you try to make someone listen to reason, you try to persuade them to listen to sensible arguments and be influenced by them.
The company's top executives had refused to listen to reason.
If you say that something happened or was done for no reason ,for no good reason, or for no reason at all, you mean that there was no obvious reason why it happened or was done.
The guards, he said, would punch them for no reason...
For no reason at all the two men started to laugh.
If a person or thing is someone's reason for living or their reason for being, they are the most important thing in that person's life.
Chloe is my reason for living.
If you say that something happened or is true for some reason, you mean that you know it happened or is true, but you do not know why.
For some reason, the curtains were shut...
For some inexplicable reason she was attracted to Patrick.
If you say that you will do anything within reason, you mean that you will do anything that is fair or reasonable and not too extreme.
I will take any job that comes along, within reason...
It means working, within reason, for whatever time is necessary.
1. a rational motive for a belief or action;
2. an explanation of the cause of some phenomenon;
3. the capacity for rational thought or inference or discrimination;
4. the state of having good sense and sound judgment;
5. a justification for something existing or happening;
6. a fact that logically justifies some premise or conclusion;
1. decide by reasoning; draw or come to a conclusion;
2. present reasons and arguments
3. think logically;
argue, quarrel, debate, dispute, discuss, reason
cause, reason, excuse
think, deliberate, meditate, muse, reason, reflect, speculate
beyond (all) reason
for some reason
listen to reason
theirs (或 ours) not to reason why
reason of state
同 raison d'état
(it) stands to reason
by reason of
Tell me the when and the why ( = reason ) of it.
He is pervious to reason.
The reason for the flood was that heavy rain.
Providing that you exercise due care, there is no reason why you shouldn't live to a great age.
I'll do any thing within reason to oblige.