a barrier that has parallel or crossed bars blocking a passage but admitting air
a frame of iron bars to hold a fire
optical device consisting of a surface with many parallel grooves in it; disperses a beam of light (or other electromagnetic radiation) into its wavelengths to produce its spectrum
Adjective:
unpleasantly harsh or grating in sound;
"a gravelly voice"
grating的用法和样例：
例句
用作名词 (n.)
From the cellar grating floated up the flabby gush of porter. 隔着地窖的格子窗飘出走了气的黑啤酒味儿。
A face leered at him through a grating in a door. 有一张脸从门上的格栅里恶狠狠地瞪着他。
As he spoke there was the sharp sound of horses' hoofs and grating wheels against the cub, followed by a sharp pull at the bell. 就在他说话的时候,响起了一阵清脆的马蹄声和马车轮子摩擦路边镶边石的轧轧声,接着有人猛烈地拉着门铃。
Evil though she was, you would have been sorry to see her hideous white skin and hear her grating voice. 尽管她很坏，可是当你看到她丑陋的白皮肤，听到她难听刺耳的声音时，你还是会感到难过的。
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