cannons
A cannon is a large gun, usually on wheels, which used to be used in battles.
The cannons boom, the band plays.
炮声隆隆,鼓乐齐鸣。
A cannon is a heavy automatic gun, especially one that is fired from an aircraft.
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。
a loose cannon
If someone is a loose cannon, they do whatever they want and nobody can predict what they are going to do.
Max is a loose cannon politically.
马克斯是个在政治上随心所欲的人。