回复：*=*=* 《每日一句汉译英》*=*=*科技篇。

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。

Western diplomats and experts, who are familar with the inteligence, revealed that Iran had already completed key steps and solved technical problems with the help from foreign scientists, according to the report from Washington Post on Sunday evening.

   
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。

A former official, who used to work at international nuclear agency, said that the progress made by Iran included designing and testing the device to ignite nuclear explosion.