welding work

例句：

1. 1. The team was tasked with the challenging welding work of assembling the new bridge.
   团队被指派了艰巨的焊接工作，即组装新桥。
2. 2.He spent hours on end welding the metal together to make a sturdy table.
   他花了几个小时不停地焊接金属，制作了一张结实的桌子。
3. 3.The engineer had to perform welding work under extreme conditions to ensure the safety of the construction site.
   工程师必须在现场极端条件下进行焊接工作，以确保施工安全。