breast drill

英 美
  • n.曲柄钻(胸压手摇钻)
  • breast n.乳房;胸脯vt.(以胸)对着
  • drill n.钻孔机;钻子;反复操练;播种机v.练习;钻孔;(军事)训练
Noun:
  1. a portable drill with a plate that is pressed against the chest to force the drill point into the work

    用作名词 (n.)
    1. They were twirling a brace drill.
      他们当时正在转动曲柄钻。