rub up against

• • 偶然接触到；偶然遇到：

    He rubbed up against some interesting people at evening parties.

    他在晚会上偶然会遇到一些有趣的人。

  • 经过时(把…)擦着：

    She got some dirty marks on her trousers by rubbing up against wet paint.

    她蹭到没有干的油漆上，在裤子上弄了好些污迹。