![TheCrownePlazaHotelinCopenhagenisofferingafreemealtoany...]( "TheCrownePlazaHotelinCopenhagenisofferingafreemealtoany...")
- 問題詳情：TheCrownePlazaHotelinCopenhagenisofferingafreemealtoanyguestwhoisabletoproduceelectricityforthehotelonanexercisebikelinkedtoagenerator(發電機).Theideaistogetpeoplefitandreducetheircarbonfootprint(足跡).Guestswillhavetoproduceatleast10watthour...
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