drill，名词词性，意思是钻头、训练，例如：

1.He drills the choir to a high standard.他将合唱团训练到了一个高水平。

2.The Marines carried out a drill that included 18 ships and 90 aircraft.海军陆战队进行了有18艘军舰和90架飞机参与的训练。

3.The drill is strong enough to bore through solid rock.这把钻足以钻透坚固的岩石。