机械传动。圆盘键。尺寸和公差。
Mechanical transmissions. Woodruff keys. Dimensions and tolerances.
快速交替按下方向键左右，小人就会开始跑步，此时，玩家可以发现画面左上方的圆盘中，指针开始顺时针方向运动。
Quick turn around key press, bad people will begin to jog at this time, the player can be found in the top left picture disc, pointer began a clockwise dir.
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