基本解釋[管理學]梯子防滑塊英漢例句權威例句Chris Vien, the mayor's senior technology adviser, says they believe Internet access will spur economic growth and help low-income citizens move up the ladder.NPR: San Francisco Weighs Wi-Fi Plansladder spur更多例句詞組短語短語ladder r spur 梯子防滑塊ladder spur更多詞組專業(yè)釋義管理學梯子防滑塊