And today, if you look at the cell phone and the PDA and the PC and notebooks, desktops, there's a pretty clear distinction among those various product categories.

今天，如果看手机,掌上电脑，个人电脑，笔记本电脑，和台式电脑，就会发现很明显的差别,存在于不同的产品之间。

斯坦福公开课 - 戴尔CEO-Michael.Dell谈创业和发展课程节选

This inner cell mass develops into the embryo, which this here shown at a later stage is beginning to be clear that it's becoming an organism that looks like us.

内细胞群发育成为胎儿,这张图这是一个相对晚期的阶段,能越来越清晰地观察到,这团东西开始有个人形了

耶鲁公开课 - 生物医学工程探索课程节选