big casing gun大套管射孔器
BIG WATER GUN大水枪
BIG 3 GUN SHOOTING大光线枪射击游戏合辑
big g gun有势力的人
All-Big-Gun全重型火炮;全重型炮
Bring the Big Gun高手出动
g big gun有势力的人
big tree top gun捍卫大树;大树云霄大炮;大树防御外传
big gun irrigation system大型喷枪灌溉系统
N-COUNT（可数名词） If you refer to someone as a big gun, you mean that they have a lot of power or influence. 大人物 [非正式]
...the legal big guns who will prepare his defence.
...将为他辩护的律师大腕儿。