filling end wall

例句：

1. 1. The engineer designed the building with a focus on energy efficiency and sustainability.
   工程师在设计这座建筑时，特别注重能源效率和可持续性。
2. 2.The construction crew was working diligently to complete the project on time.
   施工队正努力按时完成这个项目。
3. 3. The architect wanted to incorporate natural light into the design of the office space.
   建筑师想在办公空间的设计中融入自然光。