Naill奈尔nailn.钉子；指甲；爪vt.钉；抓住；使固定nail clippers.指甲刀nail growth rate甲生长速度Nail lengthening指甲延长nails introducer送钉器, 插钉器nail cover check美联邦调查局对私人信件的秘密检查nailing concrete受钉混凝土nail-detaching脱甲nail en raquette[医] 球拍状甲nailhead rusting钉头锈蚀nailhead bonding钉头式接合