一些经济学家最近对他们宏观经济预测的可靠性变得非常谦逊。

Some economists are becoming newly humble about the reliability of their macro-economic forecasts.

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负荷是电力系统运行和规划的依据，准确的负荷预测有利于提高电力系统运行的经济性和可靠性。

Load is the foundation of power system operation and planning. Accurate load forecasting is advantageous to improving the reliability and economic effect of power system.

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负荷是电力系统运行和规划的依据，精确的预测可提高系统运行的可靠性和经济性。

Load is the foundation of the power system operation and planning. The precise load forecasting can improve the reliability and economy of the power system operation.

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