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Elementary students wearing face masks are seen in a classroom during a trial face-to-face learning activity amid the COVID-19 outbreak at a school in Jakarta, Indonesia, June 9, 2021. (Xinhua/Agung Kuncahya B.)
Elementary students wearing face masks are seen in a classroom during a trial face-to-face learning activity amid the COVID-19 outbreak at a school in Jakarta, Indonesia, June 9, 2021. (Xinhua/Agung Kuncahya B.)