For Shanghai, the long-term weather forecast doesn't predict a probability of rain as was the case for the last race in Malaysia.

对于上海，长期天气预报不能预测下雨的可能性，就像上一站马来西亚一样。

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A forecast model for long-term weather forecast is established in terms of a BP neural network using solar-lunar positions as input factors.

采用误差反传前向网络（简称BP网络）方法，以日、月相概率作为输入因子，建立长期天气预报模型。

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