drill /dril/ I. n.［c］ & ［u］ 1.(军事)操练，训练：perform a drill 进行训练 Soldiers have drills every day.战士们每天都要操练。 2. (语言等方面的)机械练习：The teacher gave the class plenty of drills in arithmetic.教师让全班学生做大量的算术练习。Students of English should have a lot of oral drills. 学英语的学生应该多做口头练习。3. 钻头，钻床：a hand drill 手钻；a dentist’s drill 牙医钻头；a twist drill 麻花钻 ‖II. vt. & vi. 1.钻孔：drill a hole in the iron box 在铁盒子上打眼； drill two wells within one week 一周内打了两眼井 2.操练： drill pupils in grammar 训练学生学习语法