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nail groove

美英

nail groove

（9）甲沟(nail groove)和指墙(nail wall)：甲沟是指沿指甲周围的皮肤凹陷之处，指墙则是甲沟处的皮肤。2006-02-15 11:10willi…

１０、甲沟「侧甲廓」(nail groove):甲沟是指甲板周围的皮肤凹陷之处。