In the late nineteen fifties he invented the eight-track recording method known as multi-track recording.

VOA: special.2009.09.27

In binary search-- ah, there's that wonderful phrase, this is called a version of binary search just like you saw bin-- or bi-section methods, - when we were doing numerical things- in binary search, I need to keep track of the starting point and the ending point of the list I'm looking at.

就是当我们处理数字的时候，所称的二分检索，在二分法搜索中,我需要记录区间的开始点和尾点，初始化的时候就是-,问题输入的开始点和尾点，当我开始做测试的时候,我想要做的就是去取中值点。

麻省理工公开课 - 计算机科学及编程导论课程节选

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

It's located near the Olympics venue for long track speed skating in Richmond, about a 30-minute drive south from downtown Vancouver.

VOA: standard.2010.02.23

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

The final results produced the 45-track Fanthology,arranged in order of most votes received.

VOA: standard.2009.12.18

"We know that this is already happening in remote clinics, for example in Rwanda, where cell phone-based technologies are being used to keep track of dispensation of drugs to patients with HIV,"

VOA: standard.2010.02.24