It was the beginning of the Baby Boom, an optimistic time.

婴儿潮随之出现，那是一个乐观主义的时代。

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You will feel more buoyant and optimistic about the future than you have for a long time.

对于未来，你会比很久以来所感受到的更加快活、乐观。

《柯林斯英汉双解大词典》

Focus on spending time with the optimistic people in your life and you might just become one of them.

集中时间和乐观的人在一起，你会成为他们中的一员。

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The father of captive Israeli soldier Gilad Shalit is not optimistic about his son's release, despite a videotape published on Friday showing for the first time that he is alive and well.

VOA: standard.2009.10.03

It must have been a peculiar, optimistic time of searching and exploring ideas perhaps spurred by a booming economy which spoke of opportunity.

FORBES: Barack Obama: Underachiever in a Kansas Family of Ph.D's

But, after a week in which information has been slow in coming and proved overly-optimistic time and time again, the public now greets such assertions with skepticism.

FORBES: Radiation Found in Food and Water in Japan [Updated]

That looked optimistic at the time of the Dayton accords which settled the Bosnian war in 1995.

ECONOMIST: Repatriating refugees