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Haveyoueverheardofdonatingblood?Medicalworkersonboard...
问题详情: Haveyoueverheardofdonatingblood?Medicalworkersonboardcollectbloodfromvolunteers.Thebloodisthenstoredupandgiventopeoplewhohavelostalargeamountofitduetoaccidentsordiseases. Bloodisoneofthem...