但后来，他把它们放在显微镜下观察，发现每个这些小小的，微不足道的贝壳唇部都有一个小孔。
But then he put them under a microscope and noticed that each of these small, insignificant shells had a tiny hole in its lip.
在其中一个小孔放入腹腔镜（带有光源的透镜）；腹腔镜将手术区域投射到电视屏幕上让外科医生可以观察到脊柱。
A special lighted telescope is inserted through one of these puncture holes projecting a picture on a television screen allowing your surgeon to see the spine.
腹腔镜检查方式——其中电极针通过一个小孔在很细的塑料管进入组织。
Laparoscopic, in which needle electrodes within a thin, plastic tube is threaded through a small hole in the skin in a procedure called a laparoscopy.
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