a. 两维的
在线英汉词典

two-dimensional的短语、例句：

two-dimensional adj having or appearing to have length and breadth but no depth 二度空间的; 二维的; 二向的; 平面的
a ,two-dimensional `image 平面图像
(fig 比喻) a ,two-dimensional `character, ie sb who is not very interesting 无深度的人（无趣的人）.