公海自由

例句：

1. 1. The nation's claim to sovereignty over the oceans is a cornerstone of its foreign policy.
   该国对海洋的主权要求是其外交政策的基础。
2. 2. The international community has been advocating for greater freedom in the high seas.
   国际社会一直在倡导在公海上享有更大的自由。
3. 3. The agreement aims to protect the right of states to fish in the high seas without interference.
   该协议旨在保护各国在公海上捕鱼的权利，不受干扰。