grindstone例句

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.

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