见面课：话题讨论：人类巨大的用电需求和发电的多种能源，以及对未来能源的思考。
What’s the meaning of “back-to-basics”?返璞归真
Who are wasting the majority of energy?Consumers like you or me.
People are using a new satellite-based GPS system to navigate aviation in Juneau, Alaska. （对
Why is the natural gas kept in minus 260 degrees Fahrenheit?Because natural gas is transformed into liquefied natural gas in such a low temperature, thus 600 times smaller in volume.;Because it is safer to be delivered by ship.;Because it is economical to be delivered by ship.;Because it is convinient to be delivered by ship.
The city explodes in the screen like an inferno. 这句话使用了暗喻的修辞手法。错