Land that is not previously developed and landscapes altered by current or historical clearing or filling, agricultural or forestry use, or preserved natural area use are considered undeveloped land.

先前未开发的土地，以及被当前或历史上的清理或填埋、农业或林业用途改变的景观，或者保留的天然区域均被视为未开发的土地。

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The article analyses the district differences of the needing cultivated land in developed area and developing area from item ingredients in Hunan Province.

从耕地需求的项目构成分析了湖南省经济发达地区和经济欠发地区耕地需求的地域差异。

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Along with city widening and unceasing land development, not only the new developed area construction but also the old city transformation will make city land function replacement speeding up rapidly.

随着城市的拓展和土地的不断开发，无论新区建设和旧城改造都将使城市土地的功能置换速度迅速加快。

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Almost every piece of open land in the San Francisco Bay area that can be developed has been.

FORBES: Silicon Valley Is Stuck In An Uncanny Valley Of Density

"I'm absolutely convinced from the various surveys that we've had done that the wildlife will survive and that the area of land that is going to be left will be developed as a wildlife site, " said Councillor Harsant.

BBC: By Richard Haugh