短语词组短语Symphysodon discus 盘丽鱼;七彩神仙鱼;圆盘胶齿鲷;七彩神仙discus intervertebralis 椎间盘;形成椎间盘discus thrower 掷铁饼者;铁饼运动员;掷铁饼运动员Water Discus 水盘酒店discus retractilis 回缩盘Toss discus 掷铁饼female discus 女子铁饼discus buoy 圆形浮标discus throw 掷铁饼 返回 discus