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

VOA: standard.2010.02.15

In principle, you could bill your clients for fractions of a second or fractions of a minute.

原则上,你可以按分钟或者按秒钟,从你的客户那里收取费用

耶鲁公开课 - 博弈论课程节选

Because I forgot what happens when you look at fractions.

因为我忘了处理分数的时候,应该注意的问题。

麻省理工公开课 - 计算机科学及编程导论课程节选