n.加农炮，大炮，火炮( cannon的名词复数 )； 双语释义：n.(名词)[C]大炮; 加农炮; 机关枪 a large powerful gun, often fixed to the ground or onto a two-wheeled carriage or, in modern times, fixed to aircraft英英释义： cannonn.a large artillery gun that is usually on wheelsheavy gun fired from a