n. 色阶调整；控制色阶；水平, 标准（level复数形式）

n a position on a scale of intensity or amount or quality

n a relative position or degree of value in a graded group

n a specific identifiable position in a continuum or series or especially in a process

n height above ground

n indicator that establishes the horizontal when a bubble is centered in a tube of liquid

n a flat surface at right angles to a plumb line

n an abstract place usually conceived as having depth

n a structure consisting of a room or set of rooms at a single position along a vertical scale

v aim at

v tear down so as to make flat with the ground

v make level or straight

v direct into a position for use

v talk frankly with; lay it on the line

v become level or even