键位说明: player项Forwards 向前backwards 向后left 向左right 向右walk/run 走/跑action button 动作键 fire 开火crouch 蹲jump 跳aiming 瞄准cycle up (循环升)cycle down (循环降)inventory 清单hide weapon 掩藏武器drop weapon 扔掉武器toggle run/walk 一直跑/走reload 填