My cousin Mark helped me...表兄马克帮了我。We are cousins.我们是表亲。
N-COUNT
对等物;对等的人;相关的人(或事物)
If you refer to two things or groups of people as cousins, you mean that they are equivalents or that there is a connection between them.
例句
Whereas West Germans drink wine, their Eastern cousins prefer Schnapps...西德人喝葡萄酒,而他们东德的兄弟姐妹则喜欢喝杜松子酒。The average European kitchen is smaller than its American cousin.欧式的厨房一般比美式厨房小。