正方形:square例句:A square is two-dimensional and a cube is three-dimensional.正方形是二维的(平面的),而正六面体则是叁维的(立体的)The two diagonals of a square cross in the centre.正方形两条对角线交于正方形的中心。The two diagonals of a square cross in the centre正方形两条对角线交于正方形的中心。The carpenter squared the board.木匠把木板弄成正方形。circumscribe a square画正方形的外接圆.