其實真有點道理,有數據支持VD含量和新冠的感染率有關。
所有跟帖:
• 我想到的是紫外線消毒和空氣流通。 -鍋沿- ♂ (0 bytes) () 04/23/2022 postreply 07:32:34
• 我想到的是紫外線消毒和空氣流通。 -鍋沿- ♂ (0 bytes) () 04/23/2022 postreply 07:32:34
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