He had lost track of what he was saying and began to ramble.

他忘了自己的话题，便开始瞎扯起来。

《牛津词典》

There are all sorts of things that we have to obviously monitor, to keep track of what can influence our industry.

我们必须监控各种各样的事情，跟踪哪些事情会影响我们的行业。

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The goal is to track exactly what is going on at each stage.

这样做的目的是准确跟踪每个阶段究竟发生了什么事情。

youdao

I've got some internal variables I have to store, what kinds of things do I have to keep track of?

计算的时候需要占用多少内存,我需要存储一些内部变量,我需要记录哪些东西呢？

麻省理工公开课 - 计算机科学及编程导论课程节选

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

I can be a little more careful about keeping track of what goes on inside of that loop. If I don't have any more work to do, let me just stop.

我能更小心点来跟,踪循环里发生了什么,如果没什么可干的了，就停下来吧。

麻省理工公开课 - 计算机科学及编程导论课程节选

She said she hopes to continue to track what happens to the H1N1-infected pregnant women in the report, though the details have yet to be worked out.

CNN: Study: H1N1 virus more severely affects pregnant women

Brynjolfsson countered that there is or should be more to life, or more to what economists track, than how well our basic needs are met.

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There is power in knowing what data not to track.

FORBES: Big Data Analytics: Not Just for Big Business Anymore