Rollercoastersarefastandexciting.Butpassingapainfulkidn...
问题详情:Rollercoastersarefastandexciting.Butpassingapainfulkidney(肾)stonesisnot.Theprocessispainfulandcantakealongtime.ButAmericanresearchershavefoundthatarollercoasterridejustmighthelpthosesuffering...