point light source

例句：

1. 1.The new project will use a point light source to illuminate the exhibition hall.
   新项目将使用点光源来照亮展览厅。
2. 2.The scientist pointed the light source at the target and focused it on the area of interest.
   科学家将光源指向目标，并将其聚焦在感兴趣的区域。
3. 3. The engineer adjusted the position of the point light source to optimize the lighting conditions in the workshop.
   工程师调整了点光源的位置，以优化车间的照明条件。