短语词组短语But It Fell Flat 可没His Performance Fell Flat 他演出失败The Scheme Fell Flat 这计划失败Fell flat error 跌落平面误差Fell flat on my face 重重得摔倒fell flat on his face 脸朝下摔倒fell flat on his butt 臀部着地摔倒Fell flat on sb 's face 丢脸 返回 fell flat