vacuum blood collector

例句：

1. 1. The hospital uses a vacuum blood collector to collect blood samples for testing.
   医院使用真空采血器来收集血液样本进行测试。
2. 2. The nurse carefully placed the patient's arm in the vacuum blood collector and started the process.
   护士小心翼翼地将患者的手臂放入真空采血器中，开始这个过程。
3. 3. During surgery, the surgeon used a vacuum blood collector to remove excess blood from the patient's body.
   在手术过程中，外科医生使用真空采血器从患者体内移除多余的血液。