She says she liked its perfect world with no disease, no discrimination and a very orderly government.

VOA: special.2009.06.05

The butterfly is the perfect work of art because it is both a representation and alive. It has eyes on its wings.

这只蝴蝶是一个完美的艺术作品,因为它不但是画像，也是,鲜活的，它的翅膀上有眼睛。

耶鲁公开课 - 1945年后的美国小说课程节选

I'm going to argue for the latter of what I just said, for the fact that human nature needs to be obeyed with all its flaws,with all its shortcomings, as opposed to attempting to perfect it on the psychological level.

我会谈到后者，就是说我们必须顺从于人性,接受它所有的缺陷和优点，而不是试图从心理层面上,完善它。

哈佛公开课 - 幸福课课程节选

Its fairness appeared perfect. The accused person could not know which door was hiding the lady.

VOA: special.2009.04.18

As we'll see in section today, a vaccine does not have to be totally perfect in order to prevent transmission of a disease, because when a disease enters a community its spread from one person to another.

有如我们今天看到的,疫苗不一定非要,绝对完美地阻止疾病的传播,因为当疾病侵入一个社区后,会在人群间传播

耶鲁公开课 - 生物医学工程探索课程节选

When Alexander's year long bread making adventure came to its end, he realized that the perfect loaf of bread he was after was whatever loaf he was baking at the time.

VOA: standard.2010.07.16