求翻译：One day an old lady lost her wallet on the road. When she was looking for her wallet, a girl came up to her and asked about her. The girl was told that there a large quantity of cash and her ID card. The girl smiled to her and took out an old wallet. The old lady noticed that it was exactly what she had lost. She laughed happily and thanked a lot to the kind girl. The girl said, "It is my pleasure. Out teacher always wants us to be fine and warm-hearted." The old lady went home leaving the girl happily.是什么意思？

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