built-up

动词 build-up:

1. enlarge, develop, or increase by degrees or in stages
   同义词：build up
2. form or accumulate steadily
   同义词：build up, work up, build, progress
3. prepare oneself for a military confrontation
   同义词：arm, build up, fortify, gird
4. bolster or strengthen
   同义词：build up, work up, build, ramp up
5. change the use of and make available or usable
   同义词：build up, develop

形容词 built-up:

1. peopled with settlers

built-up

adj.（形容词）
Made by fastening several layers or sections one on top of the other:
组合的，合成的：通过将几层或几部分逐个叠加而合成的：
例句：
a built-up roof.
一个组合房屋

Filled with buildings; developed:
建筑物多的；发展的：
例句：
a built-up neighborhood.
一个多建筑物的邻区