These students are taking part in experiments designed to test their knowledge and inspire them to concentrate on science,technology, engineering and math.

VOA: standard.2010.05.10

and they will test your knowledge on London,

他们会考查你对伦敦的了解程度，

伦敦的出租车司机 - SpeakingMax英语口语达人

and they will test your knowledge on London,

他们会考查你对伦敦的了解程度，

伦敦的出租车司机 - SpeakingMax英语口语达人