我们要向老年虚弱者让步。

We must make some concession to the weakness of old age.

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西尼罗河病毒感染仅导致老年人和身体虚弱者死亡。

However, West Nile virus can cause death in older or weak people.

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对于身体虚弱者，不仅可以治愈已发疾病，同时也提高了免疫功能及健康素质。

For the weak, not only can cure the disease, but also improve the immune function and health quality.

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