Danjon prismatic astrolabe

例句：

1. 1. The Danjon prismatic astrolabe is a highly accurate instrument for measuring the positions of stars.
   棱镜式天文仪是一种非常精确的仪器，用于测量恒星的位置。
2. 2. The Danjon prismatic astrolabe was used by astronomers to study the movements of planets.
   棱镜式天文仪被天文学家用来研究行星的运动。
3. 3. In ancient times, the Danjon prismatic astrolabe was considered a symbol of knowledge and wisdom.
   在古代，棱镜式天文仪被视为知识和智慧的象征。