undeveloped

形容词 undeveloped:

1. not developed
2. undeveloped or unused
   同义词：unexploited
3. (of real estate) not built upon or ready for building upon

1. The island is still undeveloped.
   这座岛屿未得到充分开发。
2. A small protuberance on a stem or branch, sometimes enclosed in protective scales and containing an undeveloped shoot, leaf, or flower.
   芽，萌芽茎或枝上小的隆起物，有时被包在保护性的介壳中，内中有未发育的根、叶子或花
3. A corridor of undeveloped land, as along a river or between urban centers, that is reserved for recreational use or environmental preservation.
   绿色走廊沿河或在两个城市中心区之间的由未开发土地形成的走廊，为市民休闲娱乐或环境保护而保留