astronomical refraction

例句：

1. 1.The planet's position in the sky is determined by its astronomical refraction.
   行星在天空中的位置是由其天文折射决定的。
2. 2. Astronomers use sophisticated instruments to measure the astronomical refraction of light.
   天文学家使用复杂的仪器来测量光的天文折射。
3. 3. The star's astronomical refraction can be used to predict its future movements.
   这颗星的天文折射可以用来预测它的未来运动。