基本解釋[琯理學(xué)]梯子防滑塊英漢例句權(quán)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(yǔ)短語(yǔ)ladder r spur 梯子防滑塊ladder spur更多詞組專業(yè)釋義琯理學(xué)梯子防滑塊