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.
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.