短語詞組短語gate footstep pier 牐門墩regulation gate the pier 節(jié)制牐牐墩gate posture pier 門架式橋墩flat gate pier 平尾墩overflow gate pier 溢流表孔牐墩sluice gate pier 泄水牐墩concrete gate pier 混凝土牐墩Electronic gate pier 碼頭的電子牐口trash rack gate pier 攔汙柵牐墩 返回 gate pier