ring-shaped core

例句：

1. 1.The new satellite's design features a ring-shaped core that can withstand high temperatures.
   新卫星的设计特点是一个能承受高温的环形核心。
2. 2. The research focused on the ring-shaped core of the planet, which is crucial for understanding its structure.
   研究专注于行星的环形核心，这对于理解其结构至关重要。
3. 3. The ring-shaped core of the moon has been studied extensively, providing valuable insights into its formationand evolution.
   月球的环形核心已经进行了广泛的研究，为了解其形成和演化提供了宝贵的见解。