n. the outer boundary of an artifact or a material layer constituting or resembling such a boundary
n. the extended two-dimensional outer boundary of a three-dimensional object
n. the outermost level of the land or sea
n. a superficial aspect as opposed to the real nature of something
n. 面, 表面, 水面, 外表, 平面
a. 表面的, 外观的, 肤浅的, 水面上的
vt. 使成平面, 使浮出水面
vi. 浮出水面, 呈现, 在地面上工作