1. 职能(或地位)相当的人;对应的事物
    Someone's or something's counterpart is another person or thing that has a similar function or position in a different place.

counterpart在线翻译

    e.g. The Foreign Secretary telephoned his Italian counterpart to protest.
           外交部长致电意大利外长表示抗议。
    e.g. The Finnish organization was very different from that of its counterparts in the rest of the Nordic region.
           芬兰的这一机构和北欧其他国家的同类机构迥然不同。