Joe Biden has acknowledged that he should have pushed for a bigger national programme to distribute free rapid Covid-19 tests earlier, as the US testing supply crunch worsens just before Christmas.
美国总统乔·拜登(Joe Biden)承认,他本应推动一项更大规模的国家计划,以便更早提供免费的Covid-19快速检测试剂盒。就在圣诞节前夕,美国检测试剂盒供应紧张加剧。
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