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"I have a big gun" 用英语可以说成 "I have a cannon"。"cannon" 这个词的来源可能源自古法语 "canno"，意为 "大炮"。例句：I have a cannon in my backyard. (我在后院有一门大炮。)
The cannons were fired to signal the start of the battle. (发射大炮作为战斗开始的信号。)
The cannonball went straight through the wall. (大炮弹直接穿过了墙壁。)
来源：作文地带整理
