development of state economy的用法和樣例：
例句
- Educational programs should fit into the national plan for economic development.
教育計劃應該適合國家經濟發展的計劃。 - A device that was a yuppie toy not so long ago has now become a potent force for economic development in the world's poorest countries.
在不遠的過去還是雅皮士們玩具的手機，現在已經成為世界上最貧窮的國家經濟發展的潛在動力之一。
