For example, a company may be able to estimate accurately the aggregate number of shoes it will sell, but it may be uncertain about which specific types of shoes will sell more than other types.

例如，一个公司也许能够准确地估计它将销售的鞋子总数，但它可能不确定哪一种特定类型的鞋子将比其他类型的鞋子卖得更多。

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Investigating the way people actually went about finding jobs in an uncertain environment, he believed, should be a central concern of the analysis of Labour markets.

他认为，调查人们在不确定环境下的实际求职方式，才是对劳动力市场进行分析的中心环节。

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You may be uncertain about some of your coworkers and your boss.

可能会对一些同事或老板的态度不太确定；

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If the mullahs fear Moussavi, a loyalist, they must be scared of their shadows and uncertain about their authority and power.

CNN: Commentary: Iran's hardliners are the real losers

The local authority group says that councils are still uncertain about whether there will be further reviews of decisions about building projects.

BBC: ?260m 'wasted' in axing school building plans

The GAO is right that users of limited scope audit reports should be uncertain about what, if any, assurances these reports provide.

FORBES: Pension Red Alert: 70% Of Pensions Are Never Audited