旧式武器。形状像长矛的头，投掷出去能击伤人。
Old weapons. Shaped like a spear head, throwing out to injured people.
麦克·里斯托曾经上演过一出恶作剧，用废弃的旧式武器和袜子卷成的“手雷”向校园里的一座办公楼发动佯攻。
His idea of a practical joke was mounting a fake assault on one of the campus's office buildings using decommissioned weapons and 'grenades' made out of rolled-up socks.
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