sun projector

例句：

1. 1.The sun projector was a popular tool for outdoor activities.
   太阳投影仪是户外活动的一个受欢迎的工具。
2. 2. The sun projector helped us to see the stars clearly during the night sky observation.
   太阳投影仪帮助我们在夜间观星时看得更清楚。
3. 3.The sun projector is a great way to enjoy nature's beauty without leaving home.
   太阳投影仪是一个欣赏大自然美景的好方法，无需离开家。