閉門造車（閉門造車）　

◎ 閉門造車 bìmén-zàochē

[make a cart behind closed doors;divorce oneself from reality and act blindlly] 原指按同一規(guī)格,關(guān)起門來造車。用起來也很合轍。后反其意而用之,比喻自作主張,不合實際

脫離實際,閉門造車,是創(chuàng)作不出好作品的