• Diseases could not easily be cured, and there was a continuous battle for survival.

    一旦生病就很难治疗人们为了生存不懈斗争

    youdao

  • Diseases could not easily be cured, and there was a continuous battle for survival.

    一旦生病就很难治疗人们为了生存不懈斗争

    youdao

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