n (1) 1)几何平面 (即能使面上任意两点的连接线整个落在上面的表面) (surface such that a straight line joining any two points in it lies only on that surface) [C]～geometry平面几何; 2)平面 (flat or level surface) [C]： It's safer to drive on the～. 在平坦的路面上驾车更安全。The roof was a perfectly～. 房顶十分平。an inclined～斜面;～sailing 平面航行法;

(2)水平(standard; level) [C] (fig)： a high～of achievement 高水平的成就;reach a higher～of development 达到较高水平的发展;The discussion was on too low a～for me. 这个讨论对我来说水平太低。keep your work at a high～使工作保持在高水平;keep the conversation on a friendly～使谈话保持友好的气氛;〖同〗level，condition，position，degree;

adj 平(面)的 (completely flat and smooth)： a～surface 一个平面;a～figure 平面(二维)图形;The surface must be completely～. 表面必须十分平。〖同〗flat，level;

vi(飞机)滑翔 ((of an aeroplane) glide) [I， I+adv]： The aircraft～d down before landing. 飞机在着陆前向下滑翔。

→′plane-table n 平板仪