lansan

例句：

1. 1. The lansan mountains are a popular hiking destination.
   兰山山脉是热门的徒步旅行目的地。
2. 2. The lansan region is known for its beautiful scenery and rich history.
   兰山地区以其美丽的风景和丰富的历史而闻名。
3. 3. Many tourists visit the lansan area during their vacations.
   许多游客在假期期间前往兰山地区旅游。