这片场地仍未开发。

The site is still ___undeveloped.

镇议会决定采取措施以惠及我们这片地区，该地区在过去五年里一直未开发。

The Town Council decided to take measures in order to benefit our area, which has remained ___undeveloped for the last five years.

大部分乡村地区仍然未开发。

Much of the countryside remains ___undeveloped.