1. They might well be overoptimistic, however since corporate executives have sometimes bought shares in their own company in a calculated attempt to dispel negative rumors about the company's health. 不过，他们可能过于乐观了，因为公司高管有时会购买自己公司的股票，目的是为了消除有关公司健康状况的负面传闻。
2. That schedule now looks hideously overoptimistic. 这个时间表现在看起来过分乐观了。
3. Those kinds of predictions, however, may be overoptimistic. 但是这么多种类的预测可能都太过于乐观了。
4. The unit-volume forecasts proved overoptimistic for several consecutive periods, and large amounts of inventory piled up. 一段时间过后，事实证明这一预测过于乐观，导致库存积压。
5. Our research shows that instead of learning from mistakes, serial entrepreneurs are just as apt to be overoptimistic after failure as before. 研究表明，比起从错误中汲取教训，连续企业家真的只是在失败之后比以前更加轻易的过分乐观。
