By contrast, it has not been so easy for observers to see why Iran would stop short of building the nuclear weapons that it may soon have the capacity to produce. But in my many off-the-record discussions with senior officials in Iran and elsewhere over the last few years, I have heard five such reasons stated with clarity and consistency, and they deserve to be taken seriously.
相比之下，观察家们都困惑于伊朗为何会在就快制造出核武器之时却停止了所有进程。但在多年以来与许多伊朗高级官员的私下谈话中，我听到了5个清晰而一脉相承的理由，而这些理由都应该受到重视。