pull-out specimen

例句：

1. 1.The doctor pulled out a sample of the patient's blood for testing.
   医生取出了病人的血液样本进行检测。
2. 2.The museum has a collection of pull-out specimens from around the world.
   博物馆收藏了来自世界各地的拉出式标本。
3. 3.The scientist used a pull-out specimen to study the effects of pollution on marine life.
   科学家使用拉出式标本研究污染对海洋生物的影响。