"The one-time cost of our system which consists of a small solar panel, a little motorcycle-sized battery and a couple of LED lamps, is less than one hundred dollars,"

VOA: standard.2009.12.13

The circulatory system which we'll talk about in a couple of weeks, the heart, the blood vessels, and the blood work together to form a totally internal function.

例如过几周我们要讲的循环系统,心脏,血管,血液,三者协同工作,形成一个完全在体内发挥作用的体系

耶鲁公开课 - 生物医学工程探索课程节选

We're going to talk about those in more detail in a couple of weeks when we talk about the immune system because these are the cells that perform and regulate the functions of our immune system that protect us from disease.

在后几周的有关免疫的课程上,我们会详细说明的,因为我们免疫系统的功能,要依靠这些细胞去完成和调节,它们使我们免受疾病侵害

耶鲁公开课 - 生物医学工程探索课程节选