erection by bridge girder erecting equipment

例句：

1. 1. The construction ofthe bridge is a crucial part of theproject.
   桥梁的建设是该项目的关键部分。
2. 2. Theengineers were busy erecting the scaffolding.
   工程师们忙于搭建脚手架。
3. 3.The team successfully erected the new towerin record time.
   团队成功在规定时间内竖起了新的塔楼。