semilunar bodies

例句：

1. 1. The moon is a semilunar body that orbits the Earth.
   月亮是一个绕地球运行的半月形天体。
2. 2.Many of the planets in our solar system are semilunar bodies.
   我们太阳系中的许多行星都是半月形天体。
3. 3. The study of these bodies has led to new insights into the formation and evolution of our solar system.
   对这些天体的研究表明，它们对我们太阳系的形成和演化有着新的启示。