The contribution of geothermal energy to the world's energy future is difficult to estimate.
地热能对世界未来能源的贡献是难以估计的。
This is the clean energy future.
未来是属于清洁能源的。
This week, I released a Blueprint for a Secure Energy Future.
本周，我发布了《未来能源安全规划》。
This week, I released a Blueprint for a Secure Energy Future.
本周，我发布了《未来能源安全规划》。
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