| 摘要 |
The JarCar Ladder presents an effective, safe, sure, way for people to escape buildings of all heights in emergencies by using commonplace materials (concrete, steel bar, wire cables, hooks, rope, wooden seat, etc.) in a unique life-saving manner, requiring no great intellect to use or employ. The newness of the invention is in its revelation of how minor things can work together as a complete unit for major accomplishments under the most dire circumstances when time is "of the essence."
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