它由一个基座和两个环状设备组成，可以套在指垫上，而指垫是手指上最敏感的部位。

It consists of a base and two ring type devices which can be worn onto the finger pad which is the most sensitive part of the finger.

youdao

它由一个基座和两个环状设备组成，可以套在指垫上，而指垫是手指上最敏感的部位。

It consists of a base and two ring type devices which can be worn onto the finger pad which is the most sensitive part of the finger.

youdao