Only since the nineteen-sixties have scientists begun to understand that the Earth is a great, living structure.

VOA: special.2010.01.12

In an effort to get more to keep the economy from collapsing at a time when at a time of great concern about the structure of the financial system.

在一种得到更多的努力中,预防经济在一种时期中崩溃，这个时期是,人们都很担忧,金融系统的结构。

耶鲁公开课 - 金融市场课程节选

It's really remarkable how far--how fast we have come from just knowing the structure of this molecule to be able to manipulate it and study it in great detail.

我们在短时间内取得了非凡的成就,从最初仅仅知道DNA分子的结构,发展到能够深入研究并加以操控它

耶鲁公开课 - 生物医学工程探索课程节选