通常，外科医生在皮肤上作两个小口，通过一个切口放入关节镜，这是装有小摄像头的细管，可以在显示屏上展现动态图像。
The surgeon typicallys two small openings in your skin. An arthroscope is placed through one opening. This device is a camera attached to a thin tube. It shows live images on a monitor.
通常，外科医生在皮肤上作两个小口，通过一个切口放入关节镜，这是装有小摄像头的细管，可以在显示屏上展现动态图像。
The surgeon typicallys two small openings in your skin. An arthroscope is placed through one opening. This device is a camera attached to a thin tube. It shows live images on a monitor.
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