But these small differences make each person an individual, different from others.

VOA: special.2010.03.23

But what's different - what would make you an engineer?

但区别是什么,工程师应具有哪些独特的素质

耶鲁公开课 - 生物医学工程探索课程节选

While there are only four different bases that make up either RNA or DNA, and so the complexity of an RNA polymer is limited.

在RNA或DNA的构成中,只含四种不同的碱基,因此一个RNA分子的复杂程度是有限的

耶鲁公开课 - 生物医学工程探索课程节选