What are the missing enriching ingredients in so many marriages that began with such happiness and so many high hopes?

究竟婚姻中缺少了什么成份？它们刚建立时是那么的幸福和充满希望。

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Yet suspicions have mounted as Iran has invested in expensive technologies for enriching uranium and making plutonium (both possible bomb ingredients) before having a civilian nuclear-power industry that can make peaceful use of them.

ECONOMIST: North Korea's nuclear spectacular