reason的中文意思是原因;理由;解释;正当理由;道理。
1、推理;推论;推断 to form a judgement about a situation by considering the facts and using your power to think in a logical way
[V that] She reasoned that she must have left her bag on the train.她断定准是把包落在火车上了。
2、[V] 思考;理解 to use your power to think and understand
the human ability to reason人的思考能力
3、[U] 思考力;理解力;理性 the power of the mind to think in a logical way, to understand and have opinions, etc.
Only human beings are capable of reason (= of thinking in a logical way, etc.) .只有人类才有理性思考的能力。