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1·The US has its own energy dilemma.

美国有自己的能源难题。

2·Dirty Energy Dilemma: What's Blocking Clean Power in The United States.

污染性能源困境：是什么封闭了美国的清洁性能源？

3·Bring forward the strategy for solving China's energy issues through analyzing current situation of energy in the world and the energy dilemma faced by China.

通过分析世界能源现状和中国所面临的能源窘境，从而提出了中国解决能源问题的战略。

4·Climate change is expected to complicate this relationship still further, presenting us with a Shared dilemma about how to balance our climate and energy objectives while preserving security.

气候变化将会使二者关系进一步复杂化，使人类陷入进退两难的困境——在确保安全的基础上，各国如何做到维护气候系统和完成能源指标之间的平衡。

5·Converting all energy production to nuclear energy would change the dilemma from too much CO2 to too much spent nuclear fuel.

以核能取代其他能源，只是将问题从二氧化碳过多变成核废料过多，无助于解决困境。