drilln.钻孔机;钻子;反复操练;播种机v.练习;钻孔;(军事)训练
drill down向下钻取
drill bush钻套
drill heel钻头根面
drill pipe钻杆
drill bits取孔钻
drill pile钻孔桩
drill rope钻井钢丝绳
drill team钻探队
drill core岩芯
drill base基台