group o是什么意思_group o用英语怎么说_group o的翻译_group o翻译成_group o的中文意思_group o怎么读,group o的读音,group o的用法,group o的例句

Noun

• 1. the blood group whose red cells carry neither the A nor B antigens;

  "people with type O blood are universal donors"