knockv.敲击；互撞；攻击n.敲；敲门；敲打knock-meter爆震计knock up copy准备稿件付印knock-kneedadj.内弯足的；八字脚的knock throughvt.拆除墙壁(打通隔墙；使两个房间合为一间或开一个新门)knock for sixvi.一击得最高分(给予沉重的打击)knock againstv.碰到； 同 ... 冲突knock up withadj.碰见knock on woodv.摸摸木头；但愿老走这种好运knocking over脱圈Knock control爆燃控制

1. He drove a nail in to fix the picture on the wall.
   他钉入一个钉子，把画固定到墙上。