n. blood donor ; donator
供血者的血和受血者的血是相容的。
输血时供血者与受血者应是同一血型以防止凝集。
In a transfusion, donor and recipient should be of the same blood group to prevent agglutination.
大多数美国供血者是高加索人,其中的45%是O型血。
Most US donors are Caucasian, amongst whom 45% of people are blood group o.
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