venae cavae

例句：

1. 1.The doctor performed an operation to remove the venae cavae.
   医生进行了一次手术来移除静脉。
2. 2. Blood flows through the venae cavae to the heart.
   血液通过静脉流到心脏。
3. 3.The patient was given a blood transfusion to replace the venae cavae.
   患者接受了输血，以替换静脉。