| 1. | Check the gear wheel drive in the groove of the wall , select four gear wheel ( red pinion is not used ) of different size for use , load heavy gear wheel , times of heavy gear wheel , times of light gear wheel , minimum gear wheel most onto separately from left to right , make gear wheel hand in , form each other , leave behind , operate a switch , drive , finish
检查墙壁凹槽中的齿轮驱动装置，选用大小不同的四个齿轮（红色的小齿轮不用） ，从左到右分别装上最大的齿轮、次大的齿轮、次小的齿轮、最小的齿轮，并使齿轮间相互交结，拉下拉闸，驱动完成。 |
