nailsn.指甲名词nail的复数形式.nailn.钉子；指甲；爪vt.钉；抓住；使固定nail-patella syndrome关节骨指甲发育不良,甲-关节发育不全,关节指甲发育不良nail clippers with file有锉指甲钳nail extensio apparatus穿钉牵引器nail-connected girder钉接板梁桥nail-biting addiction咬指甲癖nail someone to a crossvt.严厉责罚或责备某人nail scissors for infant婴儿指甲剪Nails dent into metal.钉子能钉进金属。nail a bird in flight.击下空中的飞鸟nail extension apparatus穿钉牵引器