cannonball的例句（cannonball在句子中的用法）

• It must be a cannonball. 那一定是一发炮弹.
• Suddenly , a sporadic cannonball bombed in the battle field. 敌人已经在城下骂阵了,我们却还是按兵不动.
• This cosmic cannonball is challenging theories to explain its blistering speed. 这个宇宙加农炮正在挑战解释其起泡速度的理论.