A dual carriageway, or divided highway, is a road with a dividing strip between opposing traffic flows. The dividing strip is called the central reservation.是什么意思_A dual carriageway, or divided highway, is a road with a dividing strip between opposing traffic flows. The dividing strip is called the central reservation.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句