@SandyConnell5 @joelewi53642335 @JReinerMD @dr_kkjetelina @VickiShanmugam Some yes some no. Busses for example can have very poor ventilation and crowding. People should be wearing masks there.
@SandyConnection5@joelewi53642335@JReinerMD@dr_kkjetelina@VickiShanmugam Some yes Some no.例如，公交车的通风和拥挤程度非常差。那里的人应该戴口罩。