Their government has no right to injure them by financial experiments that are opposed to the policies of other nations."

VOA: special.2010.06.24

They're actively engaged in the material, actually seeing the phenomena, by making measurements of real world experiments.

学生们能自主地参与到物质中，看见真切的现象，通过对真实世界实验,做出测量。

麻省理工公开课 - 媒体、教育、市场课程节选

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

So, introduction, "in order to explain the results of experiments on scattering of alpha rays by matter, Professor Rutherford," and there is a footnote to the Rutherford model.

嗯，绪论，为了解释实验的结果,关于物质的alpha散射，卢瑟福说“,这儿有一个卢瑟福模型的脚注。

麻省理工公开课 - 固态化学导论课程节选