Leaders of the G7 group of rich democracies have vowed to boost supplies of Covid-19 vaccines to the developing world, although divisions remain over the speed at which the west should share its doses.
由富裕民主国家组成的七国集团(G7)领导人誓言将向发展manbetx3.0 家增加新型冠状病毒肺炎(COVID-19,即2019冠状病毒病)疫苗供应,尽管西方国家在应以何种速度分享疫苗的问题上仍存在分歧。
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