In November,a cold,unseen stranger came to visit the city.

VOA: special.2009.08.01

So we're making the unseen seen in the visualizations.

因此我们通过直观化过程,使看不见的东西变得可见。

麻省理工公开课 - 媒体、教育、市场课程节选

You can see, this is how the unseen rule of finance-- The Wall Street Journal is a venerable newspaper and source of information about finance, but it's not making money.

可以看到,这就是金融界的潜规则,《华尔街日报》是一份令人尊敬的报纸,和金融信息的来源,但它并不盈利

耶鲁公开课 - 金融市场课程节选

As I groped toward the dead kitten, my mother lingered behind me unseen in the dark, her disembodied voice egging me on.

在黑暗中，我向死猫走去，母亲以一种难以言表的威慑，于黑暗中催促着我，“

耶鲁公开课 - 1945年后的美国小说课程节选