A function management system includes a programmable control unit that can automatically coordinate combine traction functions andor implement functions. Two walking members can be provided on alternative sides of the in-line skate wheels to provide a more stable platform for the wearer of the in-line skate. In response to operation of the manually operated shift device, the first gear shifting operation executing component executes a first gear shifting operation to move the front derailleur from a first shift position of a first sprocket to a second shift position of second sprocket. The sinking characteristic of the produced stream will prolong the metastability of CO2 ocean sequestration by reducing the CO2 dissolution rate into water.