1. 焊接;熔接;锻接
    To weld one piece of metal to another means to join them by heating the edges and putting them together so that they cool and harden into one piece.

    e.g. It's possible to weld stainless steel to ordinary steel...
           不锈钢是有可能和普通钢焊接在一起的。
    e.g. They will also be used on factory floors to weld things together...
           它们也可用于工厂车间，用来焊接物体。

2. 焊缝;焊接点
    A weld is a join where two pieces of metal have been welded together.

3. 使紧密结合;使成整体
    If you weld people together, you join them together to form a united organization.

    e.g. She has both the authority and the personality to weld the party together...
           团结全党所需的权威和个人魅力她两者兼具。
    e.g. The miracle was that Rose had welded them into a team.
           令人称叹的是罗斯把他们打造成了一个团队。