同时，由于不知经济危机何时结束，航空公司在采购方面犹豫不决。
And, airlines do not know when the economic crisis will be over, which also makes them reluctant to purchase.
其实比这更为严重的问题是，很多人由于害怕公司‘发现’自己的病患而对寻求治疗犹豫不决。
Even worse, for many the fear of being "found out" could affect their decision to seek appropriate treatment.
理论上说，原告必须要证明，正是由于环保局的迟疑不决，才导致了他们一些具体的损失，这些损失通过采取监控可能挽回——在同气候学一样充满了不确定性的这个领域里，这是一个很苛刻的要求。
In theory, they must prove that the EPA's foot-dragging has caused them some specific harm that regulation might remedy-a tall order in a field as fraught with uncertainty as climatology.
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