下雨天，心情格外惆怅。窗外的景色像是被雨水打湿了，一片朦胧。行人匆匆而过，仿佛每个人都在躲避雨滴。我静静地坐在窗前，看着雨水打在窗户上，不禁想起了许多往事。
下雨天，总是让人想起那些美好的回忆。我们曾经在雨天一起漫步在小巷中，手牵着手，一起享受雨水的滋润。那时的我们是多么年轻，多么有活力。如今，岁月已经不再等人，我们已经各奔东西，不再有机会一起享受雨天的美好。
下雨天， also makes me feel sad. The beautiful scenery outside is like being wet with rain water.行人匆匆而过，仿佛每个人都在躲避雨滴. I sit in front of the window, watching the rain打在窗户上， and不禁想起了许多往事.
I used to be so young and energetic. We used to walk together in the小巷 in the rain, hand in hand, enjoying the moisture. At that time, we were so young and had so much energy. Now, years have passed, and we have different lives, and we no longer have the opportunity to enjoy the beautiful scenery of the rain.
In short, the rainy day makes me feel惆怅. It reminds me of the good memories, but also makes me feel sad.