短語詞組短語back -stop 備用BS Back Channel Stop 背溝道保護型basketball back stop 籃球架top retainer back stop 門簷擋鉄back stop motion 後退停止運動armature back stop 啣鉄後擋Turn Back Stop 反轉(zhuǎn)提針door back stop 門擋 返回 back stop