knifen.刀v.用刀切割knife tackle刀组knife handle餐刀柄knife trauma刀伤knife switchn.[电]闸刀开关knife wounds刀伤knife-edgedadj.锋利的；刀刃般锋利的；(声音)尖的knife contact刀形触头,刀形触点knifeassembly切割刀组件knife-bladen.刀身；锋利的东西knife-pointn.刀尖