v 钻(洞，孔)(make (a hole， etc) in sth， esp with a drill)[I，I+prep，T+n，T+n+prep]：～for oil 钻石油;～into solid rock 在坚硬的岩石上往下钻(洞);～sb's teeth/a wall/a door/a road 在牙齿/墙/门/路上钻(洞);～a well/a tunnel 钻井/挖隧道;～a hole in sb's tooth/a wall/wood 在牙/墙/木头上钻一个洞;(soldier)～the door with bullets(战士)开枪在门上打了些洞;～the bad bits out of sb's teeth 把某人牙齿上坏的部分钻掉;

n 钻头，钻(孔机)(tool or machine for making holes in solid materials)[C]：a dentist's/pneumatic/road/electric/hand/twist/power～牙钻/风钻/路钻/电钻/手钻/麻花钻/机动钻;～bit 钻头