他和群众打成一片,从来不摆架子。 He mixed freely with the people, never putting on airs.
不要摆架子。 Don't put on airs.
我的邻居总是摆架子,装出她认识重要人物,被邀请出席豪华宴会等等。 My neighbour is always putting on airs, pretending she knows important people and is invited to rich parties, and so on.
她最好不要对我摆架子,我不喜欢那一套。 She had better not put on airs with me. I won't like it.