Currently, the vast majority of domestic social network service sites are facing the common problem: having not earned a profit yet and having not found a clear and effective profit model.

目前国内绝大部分的社交服务网站所共同面临的问题是：尚未实现盈利且未找到清晰有效的盈利模式。

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The Opportunity Cost of Using Excess Capacity a common problem in capital budgeting arises when a new project proposal calls for the use of existing, but currently idle, equipment or facilities.

时机本钱，应用过剩的消费才能一个罕见的问题在资本预算时发生的新项目的提案呼吁应用现有的，但目前闲置，设备或设备。

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While those two diseases are currently heading the list of STD risks in Utah, it's likely only a matter of time before the other most common diseases in the United States also become a problem here.

虽然这两种疾病处于犹他州STDs的首位，但是很可能过一段时间其他的常见病也成了威胁。

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