我仔细询问这个小女孩悲伤孤独的原因。

I carefully asked the little girl why she was so sad and lonely.

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虽然这个女孩过着艰难的生活，但她从不感到悲伤。

Though the girl lives a hard life, she never feels sad.

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玛丽感到很不高兴，因为旁边坐着一个女孩，她的胳膊骨折了，脸上青一块紫一块，还有一副悲伤的表情。

Mary felt unhappy because the only seat was next to a girl with her arms broken, a black-and-blue face, and a sad expression.

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