The Gulf Long-Term Follow-Up Study will survey Gulf of Mexico residents who helped with the cleanup of last year's Deepwater Horizon oil spill and follow them for at least 5 years.

这个海湾长期跟踪研究将覆盖墨西哥湾沿岸帮助处理前年深海原油泄漏事件的居民，跟踪研究至少将持续5年。

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In a recently published study (one survey conducted in 1993; the follow-up in 2009), researchers found that about 80 percent of participants younger than 30 years old dreamed in color.

在最近发表的一项研究中(这项研究在1993年就开展了，2009年又进一步研究)，研究者发现，大约80%年龄在30岁以下的人做的梦是彩色的。

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The paper documents the study process, summarizes the survey results, and discusses the results of the follow-up interviews.

文章记录了研究过程中，总结了调查结果，并讨论了后续面谈的结果。

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