auxiliary telescope

例句：

1. 1. This auxiliary telescope is perfect for observing the moon's phases.
   这个辅助望远镜非常适合观察月亮的相位。
2. 2. The astronomer used an auxiliary telescope to study the stars in the night sky.
   天文学家使用了一个辅助望远镜来研究夜空中的星星。
3. 3. The astronomy club has a collection of auxiliary telescopes for members to borrow.
   天文俱乐部有一套供成员借阅的辅助望远镜。