4. 《华盛顿邮报》星期日晚上报导说，据了解这份情报的西方外交官和核专家透露，伊朗已在外国科学家的帮助下完成关键步骤，克服了技术难题。
Washington Post said in Sunday evening that Iran has completed the key step and overcome the difficulty in technology according to western officials and nuclear experts formiliar with the information.
5. 曾在国际原子能机构工作的一名前任官员说，伊朗取得的进展包括设计、测试引发核爆炸的爆炸装置。
An former I.A.E.A. official said that Iran had made progresses in designing and testing the explosive device used to trigger a nuclear explosion.
