circle

圆周, 社交圈, 循环, 范围

ellipse in which the two axes are of equal length; a plane curve generated by one point moving at a constant distance from a fixed point; something approximating the shape of a circle; a curved section or tier of seats in a hall or theater or opera house; usually the first tier above the orchestra; any circular or rotating mechanism

围着, 环绕

盘旋, 循环