摔趴下
to fall so that you are lying on your front
(顏面丟盡地)徹底失敗
to fail completely, usually causing embarrassment
His next television venture fell flat on its face.他的下一個電視專案丟人現眼,徹底失敗了。
釋義來自《牛津高階英漢雙解詞典》第 9 版