What makes that so fascinating is that before we found the Antikythera Mechanism, the earliest device we had that could track the Sun and moon like this was invented over 1,000 years later.

让人如此着迷的是，因为在发现安提基西拉机械之前，最早能像它一样追踪太阳和月亮的设备居然要追溯到1000多年前了。

youdao

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

So, what happens when we stick to the current track?

所以，当我们坚持常规路线时，什么会发生？

youdao

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

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What they usually do is they take the underperforming fund and they merge it with one that has a better track record.

更常见的做法是把运作不佳的基金,合并到另一只表现良好的基金中去

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And he kept track of how many people he gave the vaccines to, and then he kept track of what would happen to those people when a smallpox infection occurred in their community.

他与接种过牛痘的人保持联系,关注当天花在这些人周围肆虐时,他们身上发生了什么

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Like Welker, though, he places greater emphasis on what the horse does on the track than on how he does at the ballot.

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According to Lee, Chinese youth are adapting at a pace far beyond what the government can track or brands can market to.

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Decisions are not made on the basis of hunches and guess work, which is what the fast-track courts turned out to be.

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