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的用法和樣例：
例句
用作名詞 (n.)
From the cellar grating floated up the flabby gush of porter. 隔著地窖的格子窗飄出走了氣的黑啤酒味兒。
A face leered at him through a grating in a door. 有一張臉從門上的格柵里惡狠狠地瞪著他。
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. 就在他說話的時候,響起了一陣清脆的馬蹄聲和馬車輪子摩擦路邊鑲邊石的軋軋聲,接著有人猛烈地拉著門鈴。
Evil though she was, you would have been sorry to see her hideous white skin and hear her grating voice. 儘管她很壞，可是當你看到她醜陋的白皮膚，聽到她難聽刺耳的聲音時，你還是會感到難過的。
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