Venae thoracicae internae

例句：

1. 1.The heart pumps blood to the lungs through the pulmonary veins.
   心脏通过肺静脉将血液泵入肺部。
2. 2.Venae thoracicae internae are responsible for carrying oxygenated blood back to the heart.
   胸静脉负责将含氧血液输送回心脏。
3. 3. During surgery, surgeons often need to access these veins for anesthesia or other purposes.
   在手术中，外科医生经常需要接触到这些静脉，以便进行麻醉或其他目的。