Owens dispelled Hitler's theories on the track, winning gold medals in the 100 and 200 meters, 4x100-meter relay and long jump.

VOA: standard.2009.08.19

Well, first it is important because it's-- you need to track what the population is eating and also individual intake.

说它重要首先是因为,你需要探寻人们都吃什么,还有个体摄入量

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Anything where you're actually keeping track of something like a score that's having a variable that you increment -- plus, plus, or decrement, minus, minus, using the appropriate puzzle piece could certainly be compelling.

你需要保存像分数这样的事物时,你就需要一个变量,它可以自加，++，或者自减,要使用正确的拼图。

哈佛公开课 - 计算机科学课程节选

It's difficult to keep track of the slick, says co-pilot Brian Boland.

VOA: standard.2010.07.05

So we're going to listen to a track out of John Kander's Chicago here, and the question that's at- in play at the moment is what's the meter of this cut from chicago?

我们先听一下约翰·肯德尔的作品芝加哥,中的一小段,边听边想一个问题,这个片段的节拍是怎样的,这个摘自芝加哥的片段

耶鲁公开课 - 聆听音乐课程节选

So let's listen to a track here, a sax solo and I am going to try to keep-- make some sense out of this-- because it gets more and more complex-- by following the electric bass underneath so let's listen to an old tape.

那么我们听一下这段音轨,一段萨克斯独奏,我会尽量从中,理出一些头绪,因为我们的音乐片段会越来越复杂,大家可以跟着底下电贝斯的节奏,好的,我们来一下老磁带

耶鲁公开课 - 聆听音乐课程节选

I think this is track--if you want to pursue it, it's track--six-CD--track sixteen.

如果大家想细听这曲子,它应该,在6号CD的第16首

耶鲁公开课 - 聆听音乐课程节选