Incoldwinterdays,asyouhaveprobablynoticed,germs（細菌）aree...
問題詳情：Incoldwinterdays,asyouhaveprobablynoticed,germs（細菌）areeverywhere―runnynoses,sorethroats,nothingquitelikethecommoncoldtomakeyoufeelmiserableandterrible.Butsomeexpertsbelievethatthereisnorelati...