focusing hood

例句：

1. 1. The scientist focused his attention on the problem at hand.
   科学家把注意力集中在手头的问题上。
2. 2.The camera is equipped with a focusing hood to enhance the image quality.
   这台相机配备了一个聚焦罩，以提升图像质量。
3. 3.During the experiment, the scientist used a focusing hood to protect his eyes from the bright light.
   实验期间，科学家使用了一个聚焦罩来保护他的眼睛免受强烈光线的伤害。