n.炮弹；抱膝跳水；高速列车；炮弹式发球
v.以极快速度移动；抱膝跳水
Bombs and cannonballs rained upon the town. 炸弹和炮弹雨点般地落进那个市镇。
They're getting ready to fire the human cannonball. 他们准备要发射人体炮弹了。
