柯林斯詞典blood donor (blood donors) 1. N-COUNT A blood donor is someone who gives some of their blood so that it can be used in operations. 獻(xiàn)血者 返回 blood donor劍橋詞典someone who regularly gives some of their blood for people who need it because they are sick 獻(xiàn)血者，捐血者 返回 blood donor