Mathews' speculum

例句：

1. 1.The doctor used the speculum to examineher eyes.
   医生用这个圆镜来检查她的眼睛。
2. 2. He held the speculumup to his face and examined it closely.
   他拿着这个圆镜对着自己脸，仔细地检查着。
3. 3. Thepatient was lying on atable with the speculum inplace.
   病人躺在一张桌子上，圆镜已经放好了。