未被发现的

例句：

1. 1.The undiscovered island is located in the middle of the ocean.
   这个未被发现的岛屿位于海洋中心。
2. 2. The team was undiscovered by the competition organizers.
   这个团队在比赛组织者面前是未被发现的。
3. 3.The undiscovered gem has sparked a renewed interest in the field.
   这颗未被发现的宝石重新点燃了人们对该领域的关注。