Trade sharpens wer wits; and them that's mechanics like me is forced to think. 夏洛蒂·勃朗特.雪莉.
She brings everything to a grindstone,' said Steerforth, and sharpens it, as she has sharpened her own face and figure these years past. 查尔斯·狄更斯.大卫·科波菲尔.
But come, fill a flagon, for it will crave some time to tune the harp; and nought pitches the voice and sharpens the ear like a cup of wine. 沃尔特·司各特.艾凡赫.