These include steps to diversify suppliers , strengthen oil diplomacy , build strategic oil reserves , enact conservation and efficiency policies , and develop alternative energy sources 韦恩说，美国已为减少全球能源贸易和投资壁垒付出努力，并对世界市场上新的石油和天然气来源表示欢迎。
2.
Successfully oil diplomacy has been fulfilled in the previous ten years . this dissertation aims to contribute to chinese energy undertakings and its diplomacy by analyzing its international background , finding that hasn " t been done and giving some practical suggestions 本文意在通过对中国能源外交的国际背景的分析、中国能源外交的实施和成果的总结，去发现其中的不足之处，并提出政策建议，以期为中国的能源事业和能源外交事业贡献微薄之力。
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