- 问题详情:Incoldwinterdays,asyouhaveprobablynoticed,germs(细菌)areeverywhere―runnynoses,sorethroats,nothingquitelikethecommoncoldtomakeyoufeelmiserableandterrible.Butsomeexpertsbelievethatthereisnorelationbetweencoldweatherandcatchingcolds.Sowhyarewepar...
- 8115