day position

例句：

1. 1. The sun's day position changes with the seasons.
   太阳的日位置随着季节的变化而变化。
2. 2. The astronomers were trying to determine the exact day position of the planet.
   天文学家们试图确定行星的确切日位置。
3. 3.The scientists used a telescope to observe the sun's day position.
   科学家们使用望远镜来观察太阳的日位置。