It was one man's vision that if just two drops, from a bottle like this one, could prevent children from getting the disease, that global eradication could be within reach.

VOA: standard.2010.08.02

So, for the next few minutes, I will give you a sense of why it is like that Mike has not achieved that fluidity, even though his peripheral vision has been restored.

因此，我会用随后的几分钟，来帮助大家理解，迈克及时在恢复间接视力之后,仍为何实现这一流度，大家都知道。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选