US president Joe Biden announced a series of new measures to combat the spread of the Delta coronavirus variant, including a call for states to offer $100 incentives for jabs and instructions for federal workers to show proof of vaccination or to wear masks.
美国总统乔•拜登(Joe Biden)宣布一系列旨在遏制新冠病毒Delta变种蔓延的新措施,包括呼吁各州提供每人100美元的疫苗接种激励,以及要求联邦政府工作人员提供疫苗接种证明或戴上口罩。
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