front moving lens

例句：

1. 1. The camera's front movinglens is very sharp.
   相机的前移动镜头非常锐利。
2. 2. The new lens system has afront moving feature that makes it easier tofocus on distant objects.
   新的透镜系统具有一个前移动功能，使您更容易聚焦远处的对象。
3. 3. The engineer used a front movinglens to capture the scene from a differentangle.
   工程师使用了一个前移动镜头来从不同的角度捕捉场景。