扩建 (kuò jiàn): 건물 (건물을 확장하다)

The school plans to extend the library to meet the needs of more students.

This factory extended its production line last year, and output increased significantly.

In order to accommodate more patients, the hospital decided to extend the emergency department.

With population growth, the city needs to continuously extend its infrastructure.

They plan to extend the house by adding a bedroom.