weak focusing

例句：

1. 1. The camera'sweak focusing makes it difficult to capture clearimages.
   相机的弱聚焦使得难以捕捉清晰的图像。
2. 2. The projector struggled with its weakfocusing system.
   投影仪的弱聚焦系统表现不佳。
3. 3. The scientist used a new technique toimprove the focusing of his microscope.
   科学家使用一种新的技术来提高显微镜的聚焦能力。