Newly built railways open to traffic totalled 896 km,electrified railways,1,916 km,and double-track railways,551 km.是什么意思_Newly built railways open to traffic totalled 896 km,electrified railways,1,916 km,and double-track railways,551 km.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句