front lens

例句：

1. 1. The new smartphone has afront lens that can adjust the focus automatically.
   这款新智能手机有一个可以自动调整焦点的前镜头。
2. 2. In photography, the front lensis responsible for capturing the subject'sface.
   在摄影中，前镜头负责捕捉被摄体的面孔。
3. 3. Theengineer had to replace thefront lens of the camera becauseit was damaged during testing.
   工程师不得不更换相机的前镜头，因为测试过程中它被损坏了。