cannon /ˈkænən/ CET6 TEM4

• 1. 

  N-COUNT A cannon is a large gun, usually on wheels, which used to be used in battles. 大炮

  例：

  The cannons boom, the band plays.

  炮声隆隆，鼓乐齐鸣。

• 2. 

  N-COUNT A cannon is a heavy automatic gun, especially one that is fired from an aircraft. 机关炮

  例：

  Others carried huge cannons plundered from Russian aircraft.

  其他人扛着从俄国飞机上抢来的巨型机关炮。

• 3. 

  PHRASE If someone is a loose cannon, they do whatever they want and nobody can predict what they are going to do. 随心所欲的人

  例：

  Max is a loose cannon politically.

  马克斯是个在政治上随心所欲的人。