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n. 磨刀石, 抱怨, 想念
vt. 用磨刀石磨, 磨练

n. a whetstone made of fine gritstone; used for sharpening razors
v. sharpen with a hone

过去分词: honed 过去式: honed 第三人称单数: hones 复数: hones 现在分词: honing