The US will purchase 500m Covid-19 vaccines made by Pfizer to donate to other countries, Joe Biden will announce on Thursday, a significant expansion of the country’s efforts to help increase inoculation rates around the world.
美国总统乔•拜登(Joe Biden)将于周四宣布，美国将购买5亿支由辉瑞(Pfizer)生产的新型冠状病毒肺炎（Covid-19，即2019冠状病毒病）疫苗，用于捐赠给其他国家。这是美国在帮助提高全球疫苗接种率方面做出的进一步努力。
The Biden administration had agreed to buy 200m doses this year and 300m in the first half of next year to send to other countries, according to a person familiar with the deal, who confirmed an earlier report by The Washington Post.
据一位知情人士透露，拜登政府已同意今年购买2亿支疫苗，并于明年上半年购买3亿支疫苗，以运往其他国家。这位知情人士证实了《华盛顿邮报》(The Washington Post)早前的一篇报道。
The agreement is a big increase on the 80m vaccine doses already pledged by the Biden administration to other countries, following criticism that the US is hoarding doses instead of helping those in need.
美国同意捐赠的疫苗数量在拜登政府已承诺向其他国家提供的8000万支疫苗的基础上有了很大提高，此前有批评人士称，美国正在囤积疫苗而不是帮助那些有需要的国家。
