“没有研究显示笑能够产生直接的健康效益，”布诺温说，这主要是因为将单纯的笑与单纯的好心情分离开来十分困难。

"No study has shown that laughter produces a direct health benefit," Provine said, largely because it's hard to separate laughter from just good feelings.

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华盛顿说，这个决定令人震惊，可能导致阿布·哈兹的分离主义分子更容易地获取武器。

Washington says the decision is alarming and could make it easier for Abkhaz separatists to acquire weapons.

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到星期天为止还不清楚俄罗斯是否有从南奥塞梯以及格鲁吉亚另外一个分离主义的地区阿布·哈兹撤军的意图。

It was not clear Sunday whether Russia intends to withdraw from South Ossetia and another separatist region in Georgia, Abkhazia.

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