Railway construction has maintained a good momentum. Last year, 51 billion yuan of investment was made in completing 1,350 km of new railways and doubling 800 km of old lines.是什么意思_Railway construction has maintained a good momentum. Last year, 51 billion yuan of investment was made in completing 1,350 km of new railways and doubling 800 km of old lines.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句