A knife is sharpened on the grindstone; steel is tempered in fire.刀在石上磨, 钢在火中炼.A knife is sharpened on the grindstone;steel is tempered in fire.刀在石上磨,钢在火中炼。He sharpened the edge of his knife on a grindstone.他在磨石上磨快了他的刀刃....
Take the sickle which is lying on the grindstone.把磨刀石上的那把镰刀拿去.A knife is sharpened on the grindstone; steel is tempered in fire.刀在石上磨, 钢在火中炼.He sharpened the edge of his knife on a grindstone.他在磨石上磨快了他的刀刃....