"The European missile defense proposal that the Russians are so concerned about has not been tested yet.

VOA: standard.2009.07.15

Now this has been tested in lots of interesting ways.

关于这点，曾经做过很多有趣的实验。

耶鲁公开课 - 心理学导论课程节选

Now this has been tested in lots of interesting ways.

关于这点，曾经做过很多有趣的实验。

耶鲁公开课 - 心理学导论课程节选