During the fight with a rival gang he lashed out with his flick knife.
和对立帮派群殴时，他用弹簧刀猛烈攻击。
《柯林斯英汉双解大词典》
2
The closest one has a hunting knife. The one with the knife is the fight club mechanic.
离我最近的家伙手持小猎刀，拿小刀的家伙，就是搏击机修工。
3
I'll tell them everything about fight club, and maybe I'll go to jail, and then Project Mayhem will be their problem to solve, and I won't be staring down a knife.