This is the 66th most frequent Chinese word.
建设
"建设" means "construction" or "building."
Here, '建设' is used to refer to the development and construction of infrastructure and services in a city.
我们需要共同努力促进城市的建设。
We need to work together to promote the development of the city.
In this sentence, '建设' specifically pertains to the physical construction and establishment of a school.
学校的建设得到了当地政府的大力支持。
The construction of the school received strong support from the local government.
Here, '建设' is metaphorically extended to mean the improvement or cultivation of ideas or morals within a team.