“加农炮”用英语怎么说？

三层的火炮甲板上架有64门青铜加农炮.Triple gun - decks mounted sixty - four bronze cannon.他们用加农炮攻击另一艘船.They shot the cannon balls at the other ship.这个宇宙加农炮正在挑战解释其起泡速度的理论.This cosmic cannonball is challenging theories to explain its blist...