![Rollercoastersarefastandexciting.Butpassingapainfulkidn...]( "Rollercoastersarefastandexciting.Butpassingapainfulkidn...")
- 問題詳情：Rollercoastersarefastandexciting.Butpassingapainfulkidney(腎)stonesisnot.Theprocessispainfulandcantakealongtime.ButAmericanresearchershavefoundthatarollercoasterridejustmighthelpthosesufferingfromakidneystone.Theysaysuchrideshelppatientspasst...
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