Type O is the most common blood group.
型血是最常见的血型。
The blood bank has run out of type O blood.
血库里的O型血告竭。
Type O is known as the universal blood type.
型血是一种万能血。
People with type o blood are universal donors.
O型血人是万能输血者。
Type O blood is used in emergencies when there is no time to identify the patient's blood type.
型血常常用于没有时间来确认病人血型的紧急情况。
There are four main blood types. Most people are born with one of these forms four type A, type B, type AB or type O.
存在着四类主要的血型, 大部分人生来具有其中之一型,
Type O is the most common blood group, but the supplies of it available in hospitals and blood banks are usually limited.
型血是最常用的，但是医院和血库的供应却常常有限。
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