《空间政策指令3》为美国制定了一般性指南，以减轻空间碎片的影响以及跟踪和管理太空交通。

Space Policy Directive-3 lays out general guidelines for the United States to mitigate the effects of space debris and track and manage traffic in space.

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特殊机器被用于跟踪和记录脑电波活动。

Special machines were used to follow and record brain wave activity.

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这项研究使用设备来跟踪和记录脑电波活动。

The study was done using equipment to track and record brain wave activity.

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So you need hundreds of millions of doses, at least, and you need a way to distribute that around the world, and you need a way to keep track of who got sick and who didn't after they got vaccinated.

至少需要上亿支的剂量,还得有办法将疫苗运送到世界各地,你还要一种方法进行跟踪,在接种疫苗之后谁得病了和谁没得病

耶鲁公开课 - 生物医学工程探索课程节选

So you have to admit in fact it was surprising if only 1/4 teenager girls that everybody ask on the date by someone they don't like to go out with, let alone has been some sexual harassment, or sexual molestation, or sexual stocking, which was the lover of language that was used mostly in the media in reporting them.

因此你不得不承认，事实上这件事情令人惊讶,如果只有1/4的女孩子,被她们不想一起出去的人,邀请外出约会，那更不必说那些受到性骚扰，性侵犯和性跟踪的人，其实不过是过于咬文嚼字,正如媒体报道这些事情的时候所用的字眼一样。

麻省理工公开课 - 媒体、教育、市场课程节选