朝、講堂を見上げたところです。空気が澄んでいます。This is the lecture hall looking up from the below in this morning. You can feel clear air because of radiational cooling phenomenon.
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朝、講堂を見上げたところです。空気が澄んでいます。This is the lecture hall looking up from the below in this morning. You can feel clear air because of radiational cooling phenomenon.