step sth up1.增加;促进：We must find some way to step up production or we will be unable to fulfil the order in time.我们必须想办法增加生产，否则我们将不能按期完成订货。2. 登上(舞台、讲台、台阶等)：When that famous singer stepped up the stage，she was greeted with warm applause from her audience.那位著名的歌手登上舞台时，观众给她报以热烈的鼓掌。 |