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\n\u661f\u306f\u4e00\u69d8\u306b\u5206\u5e03\u3057\u3066\u3044\u308b\u306e\u3067\u3042\u308c\u3070\u3001\u8ddd\u96e2\u306e\uff12\u4e57\u306b
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\n\u53c2\u8003
\nWhy is the Sky Dark at Night?<\/a>
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