A new study, just published in the Proceedings of the National Academy of Sciences challenges the rosy picture.

最近发表在《国家科学院院刊》上的一项新研究对这一乐观前景提出了挑战。

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A 2018 study published in the Proceedings of the National Academy of Sciences, for example, followed researchers in the Netherlands.

例如，2018年发表在《美国国家科学院院刊》上的一项研究跟踪调查了荷兰的研究人员。

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The president of the National Academy, Bruce Alberts, added this key point in the preface to the panel's report: "Science never has all the answers."

美国国家科学院的主席布鲁斯·阿尔伯茨在该小组报告的前言中补充了这一点：“科学永远无法提供所有答案。”

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The report by a team from the United States and China appears in the Proceedings of the National Academy of Sciences.

VOA: special.2009.10.27

Geographers from three American colleges did a study that will appear in the Proceedings of the National Academy of Sciences.

VOA: special.2010.03.23

A report on the team's discovery was published recently in the Proceedings of the National Academy of Sciences.

VOA: special.2009.05.12

The results were released Monday by the journal Proceedings of the National Academy of Sciences.

CNN: Fukushima tuna study finds minuscule health risks

The findings were published in scientific journal Proceedings of the National Academy of Sciences USA (PNAS).

BBC: Modern dogs have 'little in common' with ancient breeds

The research is published in the journal Proceedings of the National Academy of Sciences.

BBC: Nicotine 'increases cot death risk'