1. The nurse carefully filled the syringe with medication before administering it to the patient.
护士小心地用药物填充注射器，然后给患者注射。

2. Make sure to dispose of used syringes properly to prevent the spread of infections.
务必正确处理使用过的注射器，以防感染传播。

3. The doctor used a syringe to extract a small sample of blood for testing.
医生用注射器提取了一小部分血液进行检测。

4. She hesitated before injecting herself with the syringe, but knew it was necessary for her health.
她在用注射器给自己注射前犹豫了一下，但知道这对她的健康是必要的。

5. The syringe was equipped with a safety cap to prevent accidental needle sticks.
注射器配备了安全帽，以防止意外被针扎。

6. The veterinarian used a syringe to administer the vaccine to the puppy.
兽医用注射器给小狗注射疫苗。