用“vacuum up”造句大全,vacuum up造句
Or they suck up pathogens, sort of vacuum up pathogens, and then don't transmit them again.
Dry and cold at the end of suppression and vacuum up no problems.
Or they suck up pathogens, sort of vacuum up pathogens, and then don't transmit them again.
Dry and cold at the end of suppression and vacuum up no problems.