to join two pieces of metal together permanently by melting the parts that touch

Iron spikes have been welded (on) to the railings around the embassy. 大使馆周围的护栏上都焊上了铁刺尖头。

to make separate people into a group who can work together successfully

He is a born leader, who welded a collection of gifted individualists into a real team. 他是个天生的领袖，把一群有才华的个人组成了一支真正的团队。

a joint made by welding