The experiments had been done on briefly soaked rocks.

这些实验是在简单浸泡的岩石上做的。

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For example, experiments can be placed on the outside of a spacecraft.

例如，实验可以在航天器的外部进行。

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Many people do not like the idea of experiments on animals.

许多人不赞成在动物身上做试验。

《牛津词典》

He says more experiments on different kinds of pain are needed to better understand the effect of swearing.

VOA: special.2009.08.18

In the early 1850s, Angstrom, up at the University of Uppsala in Sweden was conducting experiments on atomic hydrogen.

在19世纪50年代的头几年，阿姆斯特朗，那时还在瑞典的乌普萨拉大学里,做了一个有关氢原子的实验。

麻省理工公开课 - 固态化学导论课程节选

But before I tell you about lab experiments let me tell you about the most famous field experiment on this idea.

但是，在此之前,让我告诉你们关于这个观点最著名的现场试验。

耶鲁公开课 - 心理学导论课程节选

Miguel Nicolelis, a pioneer of research into brain-computer interfaces at Duke University in North Carolina, worked on the experiments with scientists at the Safra International Institute for Neuroscience of Natal in his native Brazil.

CNN: Do telepathic rats advent biologic computers?

And the measurements from Viking on the biology experiments did not suggest evidence of microbial life or any life on the surface of Mars.

NPR: Revisiting the Viking Missions to Mars

Yet the transplant's protective effect persists with no sign, as yet, of diminishing and there is every reason to believe, based on the results of experiments on monkeys, that it will not diminish in the future.

ECONOMIST: Organ transplants