太阳年

例句：

1. 1. TheEarth's rotation causes the seasons,and a solar year is the time ittakes for one complete rotation around the sun.
   地球的自转导致四季更替，而一个太阳年是绕太阳完成一次完整旋转所需的时间。
2. 2. The solarcalendar is used to determine the dates ofimportant events in history, such as theWinter Solstice.
   太阳历用于确定历史上重要事件的发生日期，如冬至。
3. 3. The solar systemconsists of the Sun, eightplanets, and numerous moonsand asteroids.
   太阳系由太阳、八大行星以及众多的卫星和小行星组成。