三海里领海界限

例句：

1. 1.The country's three-mile landborder with neighboring countries is a major traderoute.
   该国与邻国的三英里陆地边界是一条主要的贸易路线。
2. 2. The three-mile limit of the park is well-maintained and safe for visitors.
   公园的三英里范围维护得很好，对游客来说安全无虞。
3. 3. The three-mile limit was set to protect thewildlife from human activities.
   三英里限制是为了保护野生动物免受人类活动的影响。