four-sided region四边形区域
four-sided colverleaf草花筋斗
four-sided barn四合院
four-sided sail四边帆
four-sided rolling machine[木] 四面辊式贴面机
four-sided glue spreader[木] 四面涂胶机
four-sided side match四边边缘匹配
Four-sided moulding machines四边制模机械
four-wayfour-sided四方
同义词：quadrilateral