Researchers have unearthed documents from the 1600s.

研究人员已发现了17世纪的文件。

《柯林斯英汉双解大词典》

Researchers have recognized several problems that may happen.

研究人员已经认识到一些可能发生的问题。

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Researchers have begun looking more closely at ways we can change.

研究人员已经开始更密切地关注我们可以改变的方式。

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Researchers have known since the nineteen thirties that the actively growing tip of a plant releases a hormone called auxin.

VOA: special.2009.10.13

stem cell researchers have found a way to get perfectly usable stem cells from fully grown human beings.

干细胞研究者已经找到了一种方法，
可以从成年人身上获取可用的干细胞。

干细胞和伦理 - SpeakingMax英语口语达人

Researchers and scientists have been able to improve quality of life recently exponentially

研究者和科学家能够大幅度提高人类的生活质量，

需要动物实验吗？ - SpeakingMax英语口语达人

But other researchers have questioned attributing these seasonal variations that have been detected to dark matter.

BBC: Dark Matter: Experiment to shed light on dark particles

Unfortunately, the researchers have not been able to generate ball lightning in the laboratory.

BBC: New lead for fireball riddle

"These researchers have opened our eyes to the true nature of our Universe, " he added.

BBC: Nobel physics prize honours accelerating Universe find