缺少晶状体

例句：

1. 1. The doctor removed the missing lens from her eye.
   医生从她的眼睛里取出了缺失的透镜。
2. 2. She had to replace the lens in her camera.
   她不得不更换相机里的透镜。
3. 3. The lens of the telescope was broken.
   望远镜的透镜坏了。