Skiing,speed skating, luge and bobsled are all Winter Olympics sports usually decided by fractions of a second.

VOA: standard.2010.02.15

Mike actually holds the world record for downhill speed skiing for blind person, which is 60 miles an hour.

实际上,迈克是盲人高山滑雪的记录保持者，速度达到了每小时60英里。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选