以下为句子列表：
英文: As with seasonal influenza, the principal defences against a new pandemic influenza strain are vaccination and antiviral drugs.
中文: 与季节性流感一样，新流感大流行的预防有免疫接种和抗流感药。
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英文: The risk of pandemic influenza is serious.
中文: 全球流感的危险性非常严重。
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