bsp;美国联邦储备委员会20日公布的4月货币政策会议纪要表明，如果美国通胀持续高于目标水平，美联储可能采取一些收紧货币政策的措施。（新华社）原文链接
vious expectation of commercialization in the second half of this year. Pfizer is also lowering its 2023 revenue expectations for Comirnaty by approximately $2 billion due to lower-than-expected vacci
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