「世卫组织表示，新的COVID变体是迄今为止最具传播性的变体」的评论 https://chineseinus.org/who-says-the-new-covid-variant-is-the-most-transmissible-variant-to-date/ ChineseinUS Fri, 06 Jan 2023 11:31:40 +0000 hourly 1 https://wordpress.org/?v=6.9.4