To his cost, Fisher remained optimistic as the Depression wore on.
吃了这么大的苦头，随着大萧条的持续，他仍然保持乐观。
Time and cost estimates too optimistic.
时间和费用预估过于乐观。
Strange as it may sound, the increasing cost of college is another reason to be optimistic.
听起来很奇怪，大学学费的上涨是值得乐观的另外一个理由。
The survey also found that most CFOs were more optimistic about their firm's prospects compared with the previous quarter, but that their biggest concern was the cost of Labour.
该调查还发现，与上个季度相比，多数CFO对自己公司的前景更乐观了，但他们最大的担忧是劳动力成本。
Dai said he thought it was unlikely that the two most optimistic scenarios could be achieved because of the huge cost of expanding solar and wind power and capturing carbon.
戴彦德认为两个最乐观的情景都不太可能实现，原因是扩大太阳能、风能和碳捕获应用耗资巨大。
The report argued that the need for cost-benefit analyses was made all the more urgent since DE had long suffered from a history of overly optimistic expectations.
报告还说，由于过去预期过分乐观，现在对项目效益成本分析的报告已成为最为迫切的要求。
The report argued that the need for cost-benefit analyses was made all the more urgent since DE had long suffered from a history of overly optimistic expectations.
报告还说，由于过去预期过分乐观，现在对项目效益成本分析的报告已成为最为迫切的要求。
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