And the team at Goddard Space Flight Center was testing extremely small amounts of material.

VOA: special.2009.09.30

So first I'm gonna say something about identity across time or indeed initially identity across space with some familiar humdrum material objects.

所以我首先要,用一些大家熟悉的一般实物,谈谈贯穿时间,和贯穿空间中的人格。

耶鲁公开课 - 死亡课程节选

It covers more space with less material than any other building ever designed.

VOA: special.2010.05.30