We'll talk about cell culture engineering during Week 4, how do you maintain cells in culture, what are the limits of this.

第四周我们会探讨细胞培养工程,人们如何在培养基中维持细胞的存活,这种方法的局限性是什么

耶鲁公开课 - 生物医学工程探索课程节选

So probably the, the most common example of Bio-Engineering is stem cell research,

可能最常见的生物工程案例就是干细胞的研究了，

干细胞和伦理 - SpeakingMax英语口语达人