Its creators said it is the longest chemically designed DNA structure ever produced in a laboratory.

VOA: special.2010.07.20

It varies in its structure among cells of the nervous system but all synapses have some properties in common.

突触结构因神经系统细胞不同而不同,但突触都有某些共同属性

耶鲁公开课 - 生物医学工程探索课程节选

And in terms of thinking about it for organic chemistry or if you're interested in thinking about the mechanism maybe by which it is toxic, a first step would be to draw its Lewis structure.

而为了在有机化学中思考它,或者如果你对它,有毒的机理感兴趣的话，第一步要做的应该就是画出它的路易斯结构。

麻省理工公开课 - 化学原理课程节选

It has its own structure and set of rules that apply in it."

VOA: standard.2010.07.16

The essay that you read in its entirety for today, "Structure, Sign and Play in the Language of the Human Sciences," was delivered on the occasion of a conference about "the sciences of man" at Johns Hopkins University in 1966.

今天我们要读的是一整篇文章，名为《人文科学话语中的结构、符号和游戏》,这篇文章发表于1966年,在约翰普金斯大学召开的一个会议上，会议主题是“人类科学“

耶鲁公开课 - 文学理论导论课程节选