eaves purlin

例句：

1. 1. The eaves purlins on the roof are holding up the entire structure.
   屋顶上的屋檐横梁支撑着整个结构。
2. 2. The builders were busy installing the eaves purlins.
   建筑工人正在忙着安装屋檐横梁。
3. 3.The eaves purlins were a crucial part of the construction project.
   屋檐横梁是该项目的关键部分。