After having beaten established vaccine makers to produce the first Covid-19 shots, Moderna and BioNTech, with its partner Pfizer, are racing to dethrone them in another big market: flu.
在击败老牌疫苗生产商生产出首批新冠疫苗后，Moderna和BioNTech正与其合作伙伴辉瑞(Pfizer)竞相在另一个大市场取代它们：流感。
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