n.在切深孔型中切深轧制
He picked up his knife and fork. 他捡起了刀叉。
The murderer killed her by thrusting a knife in her back. 凶手把刀刺进她的背部，杀害了她。
My pencil is blunt, could you lend me a knife to sharpen it? 我的铅笔钝了，你能借我把刀子削一削吗？
He cut the meat with a blunt knife. 他用一把钝刀子切肉。
n.牵引机器相对拖拉机的转角
