"I wasn't gone.I was alive in my own perfect world, but in my heart I knew it wasn't perfect.

VOA: standard.2010.01.08

All right, it turned out that this thermometer here wasn't quite perfect either.

事实上,这样定义出来的温标。

麻省理工公开课 - 热力学与动力学课程节选

Even if it wasn't perfect, he would have had a foundation he could have built upon over the years.

CNN: Borger: Obama's only choice is to speak out

Well, if we never did anything because it wasn't perfect, we'd never do anything and America wouldn't be here celebrating the 21st century.

CNN: Transcript: Clinton speaks on patients' bill of rights

It wasn't a perfect setup, but it was better than the alternative.

WSJ: At J.P. Morgan, Managing the Unmanageable