眼柄

例句：

1. 1. The eyeball is the part of the eye that holds the lens in place.
   眼球是眼睛中保持透镜位置的部分。
2. 2. The eyeball is responsible for focusing light onto the retina.
   眼球负责将光线聚焦到视网膜上。
3. 3. The eyeball is a vital organ that allows us to see and communicate with others.
   眼球是一个至关重要的器官，使我们能够看见并与他人交流。