9月下旬ですが、まだ日中は暑いです。そのせいだと思いますが、普段利用する電車の窓のカーテン、すべて下ろされてます。気づいたのは今日だけど、暑さが増した7月か8月にはすでに下ろされてたかもしれません。 It's late September, but it's still very hot during the day. Perhaps that’s why all the curtains of the train I usually use are closed. I noticed this today, but I guess they have been closed since Ju…