"心中感慨万千"可以用英文表示为"feel a deep sense of emotion/sentiment"或者"have deep feepngs/emotions/sentiments."这个短语源自汉语，意思是指一个人因为某件事感受到深刻的情感。

下面是一些例句和它们的中文翻译：

"As I walked through the quiet streets, I couldn't help but feel a deep sense of emotion knowing that this was the last time I would see this place." (当我漫步在宁静的街道时，我忍不住感受到了深刻的情感，知道这是我最后一次看到这个地方。)

"She pstened to her grandfather's stories and felt a deep sense of sentiment knowing that these were the last memories she would have with him." (她听着祖父讲述他的故事，感到了深刻的情感，知道这是她和他最后的记忆。)

"As the sunset over the ocean, I couldn't help but have deep feepngs of gratitude for the beauty of nature." (当夕阳落在海上时，我忍不住对大自然的美丽感到深深的感恩。)