柯林斯詞典cannon /?k?n?n/ (cannons) 1. N-COUNT A cannon is a large gun, usually on wheels, which used to be used in battles. 大砲 The cannons boom, the band plays. 砲聲隆隆，鼓樂齊鳴。2. N-COUNT A cannon is a heavy automatic gun, especially one that is fired from an aircraft. 機關(guān)砲 Others carried huge cannons plundered from Russian aircraft. 其他人扛著從俄國飛機上搶來的巨型機關(guān)砲。3. PHRASE If someone is a loose cannon, they do whatever they want and nobody can predict what they are going to do. 隨心所欲的人 Max is a loose cannon politically. 馬尅斯是個在政治上隨心所欲的人。 返回 cannon劍橋詞典a large , powerful gun , usually attached to two or four wheels , that was used in the past to fire heavy stone or metal balls （舊時的）大砲，火砲，加辳砲 a gun fastened to an aircraft （飛機上的）機關(guān)槍 返回 cannon