You can see some people in the back with cameras as part of an experimental pilot program funded by the Hewlett Foundation and at some point they will decide what they will do with these lectures.

你们能看到后面的摄像人员,这是个由休利特基金会赞助的实验性试播项目,在某种程度上来说,是由他们决定,如何使用这些课堂录像

耶鲁公开课 - 基础物理课程节选

Meanwhile, research into fusion power (in which energy is generated by fusing hydrogen atoms together at very high temperatures) has left behind a different kind of debris: a trail of experimental reactors, none of which has yet reached the break-even point where the amount of energy that comes out exceeds the amount put in.

ECONOMIST: Nuclear waste

In nineteen eighty-one, Iraq was on the point of acquiring nuclear power. 10.17.01 Narrator The Osirak reactor was an experimental plutonium plant.

BBC