1、reason英[?ri?zn]美[?ri?zn]，n.原因; 理由; 解释; 正当理由; 道理; 情理; 思考力; 理解力; 理性;v.推理; 推论; 推断; 思考; 理解。
2、[例句]There was much discussion about the reasons for the failure.就失败的原因进行了大量的讨论。