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小学科学知识趣味学7：如何观测天气
这一场倾盆大雨已经接连下了五天，开心球的居民们都没办法出门。鹿教授想用它的工具来测一测雨什么时候会停。院子里摆满了各种各样的工具：望远镜、雨量计、温度计、风向标……
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