This optimistic prediction is not groundless.

这个乐观的预言，不是没有根据的。

youdao

It seemed a very optimistic prediction at the time, given how few shops were configuring even basic WebSphere MQ security.

当时，这似乎是一个非常乐观的预测，因为当时即使是配置了基本WebSphere MQ安全性的企业都非常少。

youdao

If McKinsey's growth prediction looks reasonable, others look optimistic.

如果麦肯锡的增长率预测看起来还靠谱的话，其它的预测看起来就太乐观了。

youdao

They suggest that the business case for HS2 is based on an overly-optimistic prediction of growth in demand for long-distance train travel.

BBC: HS2 compensation to be 'comprehensive'

That is a relatively optimistic prediction, for it would merely return the bankruptcy rate close to its long-term average after an abnormally trouble-free period, and it assumes only a mild recession in America.

ECONOMIST: Bankruptcies in America

Yes, the 2012 London Olympics budget had to be adjusted to account for over-optimistic prediction, but if the human spirit were not optimistic, would there be anyone around to participate in the actual Games?

CNN: Why we fool ourselves into optimism