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.

《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。

youdao

The entire sound track consists of three essential ingredients: the human voice, sound effects and music.

整个音轨由三个基本要素组成：人声、音效和音乐。

youdao

Three dozen NOAA vessels are currently working to track the oil spill and major research cruises are being put together to study the effects of the BP oil spill in the Gulf.

隶属于美国国家海洋与大气管理局，拥有三十六艘船的船队现在正在工作以追踪油污，并且大型科考船也派在一起研究BP公司在墨西哥湾的原油泄漏所造成的影响。

youdao

The Vioxx recall started off a firestorm, fueling Congressional hearings into the FDA's ability to track side effects and causing massive upheavals throughout the drug industry.

FORBES: Safety Vs. Efficacy

Some of the toughest reforms, like a proposal to create a separate FDA office that would track side effects and yank products from the market, have fallen by the wayside.

FORBES: Magazine Article

The FDA's ability to track drug side effects is "a joke, " says David Nathan, a diabetes drug expert at Harvard Medical School who reviewed Nissen's paper.

FORBES: Open-Source Drug Safety?