The students were into four groups before doing experiments.

学生们在做实验前分成四组。

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They provided a place for doing experiments in space and practicing spacecraft docking.

他们提供了一个在太空中做实验和练习航天器对接的地方。

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He was doing experiments in a gas discharge tube.

实验是在一个气体放电管中进行的。

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Pieter Hoff says he is now doing experiments with twenty thousand Waterboxxes in countries including Pakistan, Ecuador and the United States.

VOA: special.2010.07.13

We will give many lectures, ten or fifteen minutes of lectures, and that will be broken up by desktop experiments where the students collaborate with each other, doing experiments.

我们会讲很多小讲座，十或十五分钟一个，这些讲座中会间隔地穿插,桌面实验,学生可以一起合作，做实验。

麻省理工公开课 - 媒体、教育、市场课程节选

I am doing experiments with a professor.

我跟一个教授做实验。

在研究所工作 - SpeakingMax英语口语达人

Unlike most high-school science fair participants, they seem unaware that the point of doing experiments is to identify what actually works.

WSJ: Peter Suderman: The Lesson of State Health-Care Reforms

He would carefully review the literature, design all the studies (with his various co-authors), set up the experiments, print out all the questionnaires, and then, instead of actually doing the experiments and distributing the questionnaires, made it all up.

FORBES: Fraud In The Ivory Tower (And A Big One Too)

Doing conclusive experiments on people would have been out of the question, and trying to substitute laboratory animals was felt to be unreliable.

ECONOMIST: Model behaviour