Jack made a complete presentation of the topic given by his teacher.

杰克就老师给的话题作了完整的陈述。

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This was the topic of a presentation we gave at the World Energy Technologies Summit in New York City last month.

FORBES: A Clean Energy Competitiveness Strategy For America

The questionably named Cyber University in Japan has begun offering a mobile class on the "mysteries of the pyramids, " but instead of a typical PC's display of text, images, sound, and video, the mobile version offers a streaming Power Point presentation on the topic.

ENGADGET: College course via mobile phone being offered in Japan

But then there's the morning after - a topic covered in gruesomely chemical detail by Alyson Mitchell of the University of California Davis in her presentation Chemistry and Anatomy of a Hangover.

BBC: US chemistry meeting tackles science of booze