objective lens

例句：

1. 1.The scientist used an objective lens to capture the image of the distant galaxy.
   科学家使用一个客观镜头捕捉了远处星系的图像。
2. 2.In photography, the objective lens is responsible for focusing light onto a sensor.
   在摄影中，客观镜头负责将光线聚焦到传感器上。
3. 3. The objective lens in the microscope magnifies objects and makes them appear smaller.
   显微镜中的客观镜头放大物体并使其显得更小。